# Are there vaiables/constants

**URL:** <https://discourse.shapr3d.com/t/are-there-vaiables-constants/7502>\
**Category:** Modeling Questions\
**Created:** [April 27, 2020, 3:29pm UTC](https://discourse.shapr3d.com/t/are-there-vaiables-constants/7502 "2020-04-27T15:29:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![wesmat](https://avatars.discourse-cdn.com/v4/letter/w/c77e96/32.png) [@wesmat](https://discourse.shapr3d.com/u/wesmat)\
**Post date:** [April 27, 2020, 3:29pm UTC](https://discourse.shapr3d.com/t/are-there-vaiables-constants/7502/1 "2020-04-27T15:29:48Z")

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I’d like to be able to define a value and then use that value when defining objects. For instance, right now I am modeling a tool rack and I’d like the base width to be 1/4 of the depth and when I change the depth the width should update. Is that possible? I use such ratios often and editing each part separately is tedious. Some of my models have 5 or more dependent dimensions, so changing them takes time and sometimes I miss one.

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**Author:** ![Victor\_Shapr3D](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/victor_shapr3d/32/3502_2.png) [@Victor\_Shapr3D](https://discourse.shapr3d.com/u/Victor_Shapr3D)\
**Post date:** [April 27, 2020, 4:50pm UTC](https://discourse.shapr3d.com/t/are-there-vaiables-constants/7502/2 "2020-04-27T16:50:43Z")

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Hi, this currently not possible in the app and they will have to be edited seperately. Thanks for the feedback and I will pass it on to our product team.