# （Resolved！thanks）As below screenshot,the Signal reference is always empty,I don't know where to set it

**URL:** <https://forum.flowable.org/t/resolved-thanks-as-below-screenshot-the-signal-reference-is-always-empty-i-dont-know-where-to-set-it/2644>\
**Category:** Flowable Designer\
**Created:** [September 27, 2018, 5:25am UTC](https://forum.flowable.org/t/resolved-thanks-as-below-screenshot-the-signal-reference-is-always-empty-i-dont-know-where-to-set-it/2644 "2018-09-27T05:25:34Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![guaiguaihu](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/guaiguaihu/32/847_2.png) [@guaiguaihu](https://forum.flowable.org/u/guaiguaihu)\
**Post date:** [September 27, 2018, 5:25am UTC](https://forum.flowable.org/t/resolved-thanks-as-below-screenshot-the-signal-reference-is-always-empty-i-dont-know-where-to-set-it/2644/1 "2018-09-27T05:25:34Z")

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Hi，

![image](https://cdck-file-uploads-canada1.s3.dualstack.ca-central-1.amazonaws.com/flex035/uploads/flowable/original/1X/fb88ad1d20e36c7692e853d473cf3671ac36b0fb.png)

Additional,assume I’ll use flowable as a service,where to difine the Intermediate Catching Events?  
 ![image](https://cdck-file-uploads-canada1.s3.dualstack.ca-central-1.amazonaws.com/flex035/uploads/flowable/original/1X/11a471778e4759bf645e863c5f3fe8f6e4bfa370.png)

Regards  
Jinliang Liu

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**Author:** ![Mizar](https://avatars.discourse-cdn.com/v4/letter/m/71e660/32.png) [@Mizar](https://forum.flowable.org/u/Mizar)\
**Post date:** [March 8, 2019, 12:55pm UTC](https://forum.flowable.org/t/resolved-thanks-as-below-screenshot-the-signal-reference-is-always-empty-i-dont-know-where-to-set-it/2644/2 "2019-03-08T12:55:19Z")

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Hi dear,

I have the exact same problem as you, the signal reference is always empty: how to define it without editing code, but only using the modeler? Is it even possible? For both throwing and catching events?

Would be glad to hear how you resolved your issue.

Thanks a lot and regards,  
Antoine

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**Author:** ![Mizar](https://avatars.discourse-cdn.com/v4/letter/m/71e660/32.png) [@Mizar](https://forum.flowable.org/u/Mizar)\
**Post date:** [March 8, 2019, 1:02pm UTC](https://forum.flowable.org/t/resolved-thanks-as-below-screenshot-the-signal-reference-is-always-empty-i-dont-know-where-to-set-it/2644/3 "2019-03-08T13:02:00Z")

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And by the way, is there also a way to set the scope of these events to “processInstance” (ie, to limit the scope to the process they’re executed within), directly in the modeler/without editing code?

Thanks again,  
Antoine

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**Author:** ![pipik.roman](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/pipik.roman/32/1126_2.png) [@pipik.roman](https://forum.flowable.org/u/pipik.roman)\
**Post date:** [March 14, 2019, 6:51am UTC](https://forum.flowable.org/t/resolved-thanks-as-below-screenshot-the-signal-reference-is-always-empty-i-dont-know-where-to-set-it/2644/4 "2019-03-14T06:51:54Z")

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You have to define signals in process properties first.  
So in flowable-modeler web app after you open visual editor you can see “Signal Definitions” in properties at the bottom of the view. You can also see proces properties by clicking on canvas - deselecting everything. By clicking on “Signal Definitions” value, dialog window is opened where signals can be modified, including their scope.

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**Author:** ![Mizar](https://avatars.discourse-cdn.com/v4/letter/m/71e660/32.png) [@Mizar](https://forum.flowable.org/u/Mizar)\
**Post date:** [March 15, 2019, 3:07pm UTC](https://forum.flowable.org/t/resolved-thanks-as-below-screenshot-the-signal-reference-is-always-empty-i-dont-know-where-to-set-it/2644/5 "2019-03-15T15:07:56Z")

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Fantastic, thanks a lot for your super clear and helpful answer!