[image] I am a novice，I encountered a problem using the if node，In the picture, the false option will be obtained under TRUE results。 Thank you for your help

maybe help you [image] Hi guys I have some issue with node "if" Known issue with the If node pre 2023 i think. Python is the easiest workaround in older builds.

Check the levels, use to be the first issue when I need work with filtering.

If node usage issues

Revit

manhgt214 May 6, 2023, 4:03am 2

maybe help you

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If node usage issues

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