Rotate isn't working

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I can’t rotate my groups anymore…it was working a few months ago.
But I can’t get it to work any more.
Rotate family based on the group id doesn’t do anything.
elements.rotate only rotates the first element in the list.
How can I rotate my placed groups?

Thank you…

found the solution here…

I don’t know if i have the updated note…but i need to feed the vector and the angle as a list

http://dynamobim.com/forums/topic/rotate-generic-family-with-dynamo/