Yes/no parameter to yes if text parameter is empty

[Lennard_Kemper]

Hello, I would like to trigger a YES/NO parameter depending on whether a certain text parameter contains text or not.

But unfortunately I have no idea what the formula for this should look like, or whether it is even possible in this combination.

I hope someone can give me an answer here.

[apjones · Accepted solution]

Have you looked here:

https://www.revitforum.org/forum/revit-all-flavors/tutorials-tips-tricks/1126-revit-formulas-for-eve...

[ToanDN · Accepted solution]

No you can't use a text parameter to drive other parameters.