# RW 7.2 cannot compare group signal with num variable

**URL:** <https://tech-community.robotics.abb.com/t/rw-7-2-cannot-compare-group-signal-with-num-variable/10156>\
**Category:** OmniCore\
**Created:** [April 29, 2021, 11:56am UTC](https://tech-community.robotics.abb.com/t/rw-7-2-cannot-compare-group-signal-with-num-variable/10156 "2021-04-29T11:56:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Newman](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/newman/32/2900_2.png) [@Newman](https://tech-community.robotics.abb.com/u/Newman)\
**Post date:** [April 29, 2021, 11:56am UTC](https://tech-community.robotics.abb.com/t/rw-7-2-cannot-compare-group-signal-with-num-variable/10156/1 "2021-04-29T11:56:08Z")

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I’ve done this before type of comparisons in RW6 but it doesn’t work in my new omnicore controller.

 ![image.png](https://europe1.discourse-cdn.com/flex005/uploads/robotics1/original/2X/f/f45ee7a25a2cdafcb6f741960103c46eafa2cc11.png)

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**Author:** ![Fritz](https://avatars.discourse-cdn.com/v4/letter/f/c57346/32.png) [@Fritz](https://tech-community.robotics.abb.com/u/Fritz)\
**Post date:** [April 29, 2021, 12:21pm UTC](https://tech-community.robotics.abb.com/t/rw-7-2-cannot-compare-group-signal-with-num-variable/10156/2 "2021-04-29T12:21:02Z")

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Hi ! There is change in RW7.2, it’s now dnum. Use conversion.  
Have a look in 7.2 release notes - it’s described there.

Edit: Best way to solve it is to use GOutput function to get num value out from group signal.

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<div class="post-metadata">

**Author:** ![Newman](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/newman/32/2900_2.png) [@Newman](https://tech-community.robotics.abb.com/u/Newman)\
**Post date:** [April 30, 2021, 6:33am UTC](https://tech-community.robotics.abb.com/t/rw-7-2-cannot-compare-group-signal-with-num-variable/10156/3 "2021-04-30T06:33:20Z")

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> [@Fritz](#):
>
> Hi ! There is change in RW7.2, it’s now dnum. Use conversion.  
> Have a look in 7.2 release notes - it’s described there.
> 
> Edit: Best way to solve it is to use GOutput function to get num value out from group signal.

Thanks Fritz!  
It works 🙂  
/David

 ![image.png](https://europe1.discourse-cdn.com/flex005/uploads/robotics1/original/2X/b/b2d6259a1b5c4ba4930313cb4e29e646eefde347.png)  
Actually, as long as comparison is to dnum value no conversion (GOutputToDnum) is needed:  
 ![image.png](https://europe1.discourse-cdn.com/flex005/uploads/robotics1/original/2X/1/17cc8c0f534f86c4083eac8a8f1d5fd035545cac.png)