# How can I process an action in unreal engine?
**URL:** https://discourse.kitware.com/t/how-can-i-process-an-action-in-unreal-engine/1003
**Category:** Pulse Physiology Engine
**Created:** [March 16, 2023, 9:00pm UTC](https://discourse.kitware.com/t/how-can-i-process-an-action-in-unreal-engine/1003 "2023-03-16T21:00:07Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@mrgreen](https://discourse.kitware.com/u/mrgreen)
#### Post date: [March 16, 2023, 9:00pm UTC](https://discourse.kitware.com/t/how-can-i-process-an-action-in-unreal-engine/1003/1 "2023-03-16T21:00:07Z")
Howdy! I’m a complete newbie, but I want to use pulse with blueprints, but I can’t get the processAction function to work. I just get errors and it never seems to do anything. (Also, I noticed that in the preview for ue5.1, the example pulse component’s “IED Explosion” doesn’t seem to do anything as well)
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### Author:  [@abray](https://discourse.kitware.com/u/abray)
#### Post date: [March 16, 2023, 9:48pm UTC](https://discourse.kitware.com/t/how-can-i-process-an-action-in-unreal-engine/1003/2 "2023-03-16T21:48:36Z")
We have a sample project here
[https://gitlab.kitware.com/physiology/unreal](https://gitlab.kitware.com/physiology/unreal)
You should be able to pull these and see how this example is working
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### Author:  [@mrgreen](https://discourse.kitware.com/u/mrgreen)
#### Post date: [March 17, 2023, 12:37pm UTC](https://discourse.kitware.com/t/how-can-i-process-an-action-in-unreal-engine/1003/3 "2023-03-17T12:37:52Z")
Thanks! But for some reason, I get “incompleted type” errors in my ide, but it compiles fine.
Also, I can’t seem to be able to parse `eHemorrhage_Compartmen`t as an input to a function - it won’t compile.
Also, I’m wondering what the deal is with `WITH_PULSE`. Like, why is it used and is it necesary?
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### Author:  [@abray](https://discourse.kitware.com/u/abray)
#### Post date: [March 17, 2023, 1:24pm UTC](https://discourse.kitware.com/t/how-can-i-process-an-action-in-unreal-engine/1003/4 "2023-03-17T13:24:01Z")
Check which [SEHemorrhage.h](https://gitlab.kitware.com/physiology/engine/-/blob/integration/src/cpp/cdm/patient/actions/SEHemorrhage.h) you are pulling in, `eHemorrhage_Compartmen` is defined there.
The `WITH_PULSE` is there from a collaborator helping write the plugin
I believe they had it in there to be able to easily turn off Pulse in the build to perform testing and timing with and with out Pulse easily
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### Author:  [@mrgreen](https://discourse.kitware.com/u/mrgreen)
#### Post date: [March 17, 2023, 1:25pm UTC](https://discourse.kitware.com/t/how-can-i-process-an-action-in-unreal-engine/1003/5 "2023-03-17T13:25:38Z")
Alright, thanks!