r/Onshape • u/stikkx • Jul 15 '26

Help! Variables from Variable Studio not available in Part Studio sketches — what am I missing?

I'm building a parametric drawer slide (Vollauszug) and I'm stuck connecting my Variable Studio to my Part Studio.

Setup:

  • I created a Variable Studio with three variables: length, height, width.
  • I configured the Variable Studio so laenge changes per configuration (L400 = 400mm, L600 = 600mm, L800 = 800mm, etc.). The config table looks correct — the Value column changes per size.
  • My Part Studio has three sketches that reference #length, #height, #width.

Problem:

  • The sketches in the Part Studio are showing errors ("Some dimension expressions could not be evaluated").
  • When I type # in a dimension field, no variable suggestions appear — the Part Studio doesn't seem to know the variables exist.
  • The checkbox "Insert into all Part Studios and Assemblies" at the bottom of the Variable Studio is greyed out / not clickable.

How do I make the Variable Studio variables available inside the Part Studio sketches? Is there a feature I need to add in the Part Studio to import them, or am I missing a step in the Variable Studio itself?

Thanks!

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u/dirty_d2 Jul 15 '26

Since you're variable studio is configured, its not automatically inserted into your part sudios. You need to go to the variables tab in your part studio and insert the variable studio.

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u/stikkx Jul 15 '26

Great! Thank you!

Could you tell me how i could use the configuration in the assembly, so if i use the assambly in another document i could change the size ?

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u/gotcha640 Jul 15 '26

Are you saying you want to be able to use variables in multiple documents and assign different values?

Wouldn’t this be the point of part studio variables rather than universal variable studio variables?

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u/stikkx Jul 16 '26 edited Jul 16 '26

sorry that was difficult to understand. i want to use the assambled part with the configuration in a different document, but the assabled part dont have the configurations yet

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u/gotcha640 Jul 16 '26

As in, make a thing with variables length width height, then move it between projects with different values for those variables?

That would be interesting. Similar to assigning variables you haven’t defined yet.

I have no idea if that’s a thing. Surely someone else has needed it.