# Output variables from call activity on boundary event
**URL:** https://forum.flowable.org/t/output-variables-from-call-activity-on-boundary-event/4462
**Category:** Uncategorized
**Created:** [September 4, 2019, 4:03pm UTC](https://forum.flowable.org/t/output-variables-from-call-activity-on-boundary-event/4462 "2019-09-04T16:03:36Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@moraleda](https://forum.flowable.org/u/moraleda)
#### Post date: [September 4, 2019, 4:03pm UTC](https://forum.flowable.org/t/output-variables-from-call-activity-on-boundary-event/4462/1 "2019-09-04T16:03:36Z")
Is there a way to send variables from a called process that triggers a bpmn error event back to the calling process? In particular, has any of the proposed syntax discussed at [https://community.alfresco.com/thread/219599-output-variables-from-callactivity-on-boundaryevent-trigger](https://community.alfresco.com/thread/219599-output-variables-from-callactivity-on-boundaryevent-trigger) been implemented?
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### Author:  [@joram](https://forum.flowable.org/u/joram)
#### Post date: [September 10, 2019, 10:55am UTC](https://forum.flowable.org/t/output-variables-from-call-activity-on-boundary-event/4462/2 "2019-09-10T10:55:42Z")
Not from an error event, afaik. However a call activity has in/out parameters that can be used to transfer variables in/out.
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### Author:  [@foueml](https://forum.flowable.org/u/foueml)
#### Post date: [May 3, 2024, 10:50am UTC](https://forum.flowable.org/t/output-variables-from-call-activity-on-boundary-event/4462/3 "2024-05-03T10:50:11Z")
can we send events boundary from parent process to child using call activity ?