Unable to select ceiling pattern for rotation

[Anonymous]

For some reason, my revit file won't let me select my ceiling pattern for one of the ceilings.

I am able to select the ceiling pattern for other ceilings, but for some, I am unable to.

Does anyone know how I can fix this problem? 

I'm trying to select the ceiling pattern so that I can rotate it.

[Anonymous · Accepted solution]

Ah!! I just solved my own problem. 

I just needed to make my ceiling pattern as "model" lines instead of "drafting" lines. 🙂 

[sabrinaQNYML]

‌‌ Thank you