Get copied elements from Revit function Copy

[Nick_Boyts]

Hmm. It looks like Revit won’t let you “interrupt” a transaction with a postable command, even if that transaction has finished.

What’s the reasoning for using a postable command instead of an alternative that could be automated? Does the copied placement have a known location?

EDIT: More information on what might be happening. It sounds like postable commands don’t finish until after execution anyway, regardless of subtransactions.

Multiple PostCommand actions

Of @Nick_Boyts solution doesn’t work you may be out just about out of options here. Some background on why: Revit will only allow one posted command at a time, with the posted command not running until the transaction is over and the focus returns to the UI. Dynamo will not return focus to the UI until after it completes execution, no matter how many times you tell it to work. Without knowing more about the intended commands I can’t think of another way to execute these in sequence.