# Fork a process instance on signal **URL:** \ **Category:** Flowable Engine\ **Created:** [January 22, 2019, 7:19am UTC](https://forum.flowable.org/t/fork-a-process-instance-on-signal/3286 "2019-01-22T07:19:16Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![pahujadeepanshu](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/pahujadeepanshu/32/837_2.png) [@pahujadeepanshu](https://forum.flowable.org/u/pahujadeepanshu)\ **Post date:** [January 22, 2019, 7:19am UTC](https://forum.flowable.org/t/fork-a-process-instance-on-signal/3286/1 "2019-01-22T07:19:16Z")
Hi, I am running a system whose processes are managed using Flowable. I need to launch a process instance in flowable by posting a signal using REST. The problem is that the POST call waits until the process instance is terminated. How can I convert it to something where I do not have to wait until completion? I tried Async but the problem is that in that case I will not be able to pass variables in my REST call. Any pointers are well appreciated. TIA. Deepanshu ---
**Author:** ![martin.grofcik](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/martin.grofcik/32/71_2.png) [@martin.grofcik](https://forum.flowable.org/u/martin.grofcik)\ **Post date:** [January 22, 2019, 8:22am UTC](https://forum.flowable.org/t/fork-a-process-instance-on-signal/3286/2 "2019-01-22T08:22:45Z")
Hi Deepanshu, Did you make first task in the called process async? In that case REST call starts the process and its executions returns before async task execution. Regards Martin ---
**Author:** ![pahujadeepanshu](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/pahujadeepanshu/32/837_2.png) [@pahujadeepanshu](https://forum.flowable.org/u/pahujadeepanshu)\ **Post date:** [January 28, 2019, 9:38am UTC](https://forum.flowable.org/t/fork-a-process-instance-on-signal/3286/3 "2019-01-28T09:38:10Z")
Thanks @martin.grofcik