# Flowable dynamic value in http task not working 6.8.0 **URL:** \ **Category:** Uncategorized\ **Created:** [February 20, 2023, 9:41pm UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248 "2023-02-20T21:41:12Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![Venkata](https://avatars.discourse-cdn.com/v4/letter/v/f4b2a3/32.png) [@Venkata](https://forum.flowable.org/u/Venkata)\ **Post date:** [February 20, 2023, 9:41pm UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/1 "2023-02-20T21:41:12Z")
When Iam using flowable version 6.7.2 it is working perfectly fine with below scenario my delegate class Iam setting a service url like below execution.setVaraible(“url”, [http://localhost/restApi](http://localhost/restApi)) and in my http task in flowable ui Iam using request url as \ ``` ``` But when I upgraded the version to 6.8.0 Iam getting null value in my http task ---
**Author:** ![filiphr](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/filiphr/32/315_2.png) [@filiphr](https://forum.flowable.org/u/filiphr)\ **Post date:** [February 24, 2023, 1:54pm UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/2 "2023-02-24T13:54:08Z")
Hey @Venkata, Can you please provide a minimal reproducible example showing this problem? I do not see a reason why this wouldn’t work. Cheers, Filip ---
**Author:** ![Venkata](https://avatars.discourse-cdn.com/v4/letter/v/f4b2a3/32.png) [@Venkata](https://forum.flowable.org/u/Venkata)\ **Post date:** [February 24, 2023, 2:38pm UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/3 "2023-02-24T14:38:22Z")
Thanks @filiphr for your response. In my delegate class, iam using execution.setVaraible(“url”, [http://localhost/restApi](http://localhost/restApi)); in my flowable using below in process work flow. ```xml ``` This is working with version 6.7.2 but not with 6.8.0. Getting NPE when iam using the ${url}. ---
**Author:** ![filiphr](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/filiphr/32/315_2.png) [@filiphr](https://forum.flowable.org/u/filiphr)\ **Post date:** [February 24, 2023, 5:05pm UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/4 "2023-02-24T17:05:16Z")
Can you please share your entire stacktrace that you are getting? The XML snippet you shared looks fine. Cheers, Filip ---
**Author:** ![Venkata](https://avatars.discourse-cdn.com/v4/letter/v/f4b2a3/32.png) [@Venkata](https://forum.flowable.org/u/Venkata)\ **Post date:** [February 24, 2023, 5:48pm UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/5 "2023-02-24T17:48:20Z")
Here is the error details @filiphr Error while closing command context. java.lang.NullPointerException: null at java.util.concurrent.CompletableFuture.screenExecutor(Unknown Source) ~[na:1.8.0\_321] at java.util.concurrent.CompletableFuture.supplyAsync(Unknown Source) ~[na:1.8.0\_321] at org.flowable.common.engine.impl.async.DefaultAsyncTaskExecutor.submit(DefaultAsyncTaskExecutor.java:89) ~[flowable-engine-common-6.8.0.jar!/:6.8.0] at org.flowable.common.engine.impl.async.DefaultAsyncTaskInvoker.submit(DefaultAsyncTaskInvoker.java:40) ~[flowable-engine-common-6.8.0.jar!/:6.8.0] at org.flowable.http.common.impl.BaseHttpActivityDelegate.prepareAndExecuteRequest(BaseHttpActivityDelegate.java:223) ~[flowable-http-common-6.8.0.jar!/:6.8.0] at org.flowable.engine.impl.bpmn.http.DefaultBpmnHttpActivityDelegate.execute(DefaultBpmnHttpActivityDelegate.java:111) ~[flowable-engine-6.8.0.jar!/:6.8.0] at org.flowable.engine.impl.delegate.invocation.FutureJavaDelegateInvocation.invoke(FutureJavaDelegateInvocation.java:38) ~[flowable-engine-6.8.0.jar!/:6.8.0] at org.flowable.engine.impl.delegate.invocation.DelegateInvocation.proceed(DelegateInvocation.java:32) ~[flowable-engine-6.8.0.jar!/:6.8.0] at org.flowable.engine.impl.delegate.invocation.DefaultDelegateInterceptor.handleInvocation(DefaultDelegateInterceptor.java:26) ~[flowable-engine-6.8.0.jar!/:6.8.0] at org.flowable.engine.impl.bpmn.behavior.ServiceTaskFutureJavaDelegateActivityBehavior.execute(ServiceTaskFutureJavaDelegateActivityBehavior.java:120) ~[flowable-engine-6.8.0.jar!/:6.8.0] at org.flowable.engine.impl.bpmn.helper.ClassDelegate.execute(ClassDelegate.java:194) ~[flowable-engine-6.8.0.jar!/:6.8.0] at org.flowable.engine.impl.agenda.ContinueProcessOperation.executeActivityBehavior(ContinueProcessOperation.java:298) ~[flowable-engine-6.8.0.jar!/:6.8.0] at org.flowable.engine.impl.agenda.ContinueProcessOperation.executeSynchronous(ContinueProcessOperation.java:175) ~[flowable-engine-6.8.0.jar!/:6.8.0] at org.flowable.engine.impl.agenda.ContinueProcessOperation.continueThroughFlowNode(ContinueProcessOperation.java:125) ~[flowable-engine-6.8.0.jar!/:6.8.0] at org.flowable.engine.impl.agenda.ContinueProcessOperation.run(ContinueProcessOperation.java:88) ~[flowable-engine-6.8.0.jar!/:6.8.0] at org.flowable.common.engine.impl.AbstractEngineConfiguration.lambda$new$0(AbstractEngineConfiguration.java:195) ~[flowable-engine-common-6.8.0.jar!/:6.8.0] at org.flowable.engine.impl.interceptor.CommandInvoker.executeOperation(CommandInvoker.java:130) ~[flowable-engine-6.8.0.jar!/:6.8.0] at org.flowable.engine.impl.interceptor.CommandInvoker.executeOperations(CommandInvoker.java:114) ~[flowable-engine-6.8.0.jar!/:6.8.0] at org.flowable.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:72) ~[flowable-engine-6.8.0.jar!/:6.8.0] at org.flowable.engine.impl.interceptor.BpmnOverrideContextInterceptor.execute(BpmnOverrideContextInterceptor.java:26) ~[flowable-engine-6.8.0.jar!/:6.8.0] at org.flowable.common.engine.impl.interceptor.TransactionContextInterceptor.execute(TransactionContextInterceptor.java:53) ~[flowable-engine-common-6.8.0.jar!/:6.8.0] at org.flowable.common.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:105) ~[flowable-engine-common-6.8.0.jar!/:6.8.0] at org.flowable.common.spring.SpringTransactionInterceptor.lambda$execute$0(SpringTransactionInterceptor.java:57) [flowable-spring-common-6.8.0.jar!/:6.8.0] at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140) ~[spring-tx-5.3.24.jar!/:5.3.24] at org.flowable.common.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:57) [flowable-spring-common-6.8.0.jar!/:6.8.0] ---
**Author:** ![Venkata](https://avatars.discourse-cdn.com/v4/letter/v/f4b2a3/32.png) [@Venkata](https://forum.flowable.org/u/Venkata)\ **Post date:** [March 9, 2023, 4:31pm UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/6 "2023-03-09T16:31:19Z")
@filiphr Did you get a chance check on this? ---
**Author:** ![filiphr](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/filiphr/32/315_2.png) [@filiphr](https://forum.flowable.org/u/filiphr)\ **Post date:** [March 10, 2023, 6:21am UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/7 "2023-03-10T06:21:36Z")
The null pointer seems to be coming due to the executor service being null. How are you creating the engine? Can you please share a minimal reproducible project? ---
**Author:** ![balajisundarajan8](https://avatars.discourse-cdn.com/v4/letter/b/e56c9b/32.png) [@balajisundarajan8](https://forum.flowable.org/u/balajisundarajan8)\ **Post date:** [March 4, 2024, 6:32pm UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/8 "2024-03-04T18:32:37Z")
@Venkata / @filiphr Any update on this issue. When we try to upgrade from 6.7.0 to 6.8.0 same issue appears. ![image](https://canada1.discourse-cdn.com/flex035/uploads/flowable/original/2X/6/6cee3a74ef6ec0b3847faffb48f76111e415aa6c.png) ---
**Author:** ![filiphr](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/filiphr/32/315_2.png) [@filiphr](https://forum.flowable.org/u/filiphr)\ **Post date:** [March 4, 2024, 6:46pm UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/9 "2024-03-04T18:46:38Z")
@balajisundarajan8 there are some open questions from me see [Flowable dynamic value in http task not working 6.8.0 - #7 by filiphr](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/7). If you provide those details I might be able to help more ---
**Author:** ![balajisundarajan8](https://avatars.discourse-cdn.com/v4/letter/b/e56c9b/32.png) [@balajisundarajan8](https://forum.flowable.org/u/balajisundarajan8)\ **Post date:** [March 4, 2024, 6:53pm UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/10 "2024-03-04T18:53:16Z")
Can you please check below code snippet @filiphr . will this help … ![image](https://canada1.discourse-cdn.com/flex035/uploads/flowable/original/2X/5/5ed9fdf5333945dfc86f7b3a251a7eb09e2f5803.png) ---
**Author:** ![balajisundarajan8](https://avatars.discourse-cdn.com/v4/letter/b/e56c9b/32.png) [@balajisundarajan8](https://forum.flowable.org/u/balajisundarajan8)\ **Post date:** [March 4, 2024, 8:16pm UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/11 "2024-03-04T20:16:45Z")
Hi @filiphr when i change parallelInSameTransaction to false http task is invoking. Any suggestion ? ![image](https://canada1.discourse-cdn.com/flex035/uploads/flowable/original/2X/2/220c2b91580671399c7450829c472c22824e38df.png) ---
**Author:** ![balajisundarajan8](https://avatars.discourse-cdn.com/v4/letter/b/e56c9b/32.png) [@balajisundarajan8](https://forum.flowable.org/u/balajisundarajan8)\ **Post date:** [March 4, 2024, 8:40pm UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/12 "2024-03-04T20:40:50Z")
Hi @filiphr can you share any sample for this scenario **Add dedicated task executor for the task invoker. This is fixing an issue with a potential deadlock when using the “true parallel” HTTP task feature** ---
**Author:** ![filiphr](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/filiphr/32/315_2.png) [@filiphr](https://forum.flowable.org/u/filiphr)\ **Post date:** [March 5, 2024, 7:21am UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/13 "2024-03-05T07:21:24Z")
> [@balajisundarajan8](#): > > can you share any sample for this scenario **Add dedicated task executor for the task invoker. This is fixing an issue with a potential deadlock when using the “true parallel” HTTP task feature** The stacktrace you shared is not related to this deadlock. The code you shared isn’t helping much. Are you using our Spring Boot Starters or you are creating your own `ProcessEngineConfiguration` bean? ---
**Author:** ![balajisundarajan8](https://avatars.discourse-cdn.com/v4/letter/b/e56c9b/32.png) [@balajisundarajan8](https://forum.flowable.org/u/balajisundarajan8)\ **Post date:** [March 5, 2024, 7:44am UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/14 "2024-03-05T07:44:40Z")
@filiphr we are using Default ProcessEngineConfiguration \. when we change this highlighted flag to false it is working in 6.8.0, if it is true then fails. Do we need to provide any custom logic ? Same issue mentioned here [HTTP task execute parallel in same transaction not working in 6.8.0](https://forum.flowable.org/t/http-task-execute-parallel-in-same-transaction-not-working-in-6-8-0/10397) ---
**Author:** ![filiphr](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/filiphr/32/315_2.png) [@filiphr](https://forum.flowable.org/u/filiphr)\ **Post date:** [March 5, 2024, 8:14am UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/15 "2024-03-05T08:14:10Z")
> [@balajisundarajan8](#): > > we are using Default ProcessEngineConfiguration What does this mean? Are you using our Spring Boot starters or not? How does your maven / gradle config look like? > [@balajisundarajan8](#): > > flowable:parallelInSameTransaction=“true” That change is only hiding the original problem, the fact that your engine configuration looks like isn’t properly configured, or you are starting a process before the entire engine has been fully booted up. ---
**Author:** ![CElbersen](https://avatars.discourse-cdn.com/v4/letter/c/dbc845/32.png) [@CElbersen](https://forum.flowable.org/u/CElbersen)\ **Post date:** [March 5, 2024, 8:18am UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/16 "2024-03-05T08:18:01Z")
I’m not affiliated with [balajisundarajan8](https://forum.flowable.org/u/balajisundarajan8) so not answering the question for him. I have the same issue (6.8.0) and created a reproducable scenario with the flowable docker image for 6.8 on dockerhub. See this topic: [HTTP task execute parallel in same transaction not working in 6.8.0 - #4 by CElbersen](https://forum.flowable.org/t/http-task-execute-parallel-in-same-transaction-not-working-in-6-8-0/10397/4) If I’m not mistaken that image uses spring boot. I’ve also tested this with an image running longer than 1 hour. I did not yet try it with 6.8.1. ---
**Author:** ![balajisundarajan8](https://avatars.discourse-cdn.com/v4/letter/b/e56c9b/32.png) [@balajisundarajan8](https://forum.flowable.org/u/balajisundarajan8)\ **Post date:** [March 5, 2024, 9:52am UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/17 "2024-03-05T09:52:44Z")
@filiphr yes we are using Spring Boot and flowable app deployed to PCF instance. Starting the process, after flowable app up & running in CF. ---
**Author:** ![filiphr](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/filiphr/32/315_2.png) [@filiphr](https://forum.flowable.org/u/filiphr)\ **Post date:** [June 11, 2024, 3:03pm UTC](https://forum.flowable.org/t/flowable-dynamic-value-in-http-task-not-working-6-8-0/10248/18 "2024-06-11T15:03:50Z")
Hey @CElbersen and @balajisundarajan8, I’m happy to say that we found the root cause for this issue and this has been fixed with [Make sure DefaultAsyncTaskExecutor is started · flowable/flowable-engine@03d8680 · GitHub](https://github.com/flowable/flowable-engine/commit/03d8680cab866a55fb144d9d2d2b4b0f08c2a21e). Cheers, Filip