How do I rotate a random object from a family

Hey guys,

Does anybody knows what I'm doing wrong with these events?

I'm trying to get construct to pick a random circle from the Circles family each time and rotate it. But it's rotating all of them each time.

You probably need to add the "trigger once while true" condition, otherwise it keeps repeating this event every tick and picking a random instance every time.

Also, a family picks a random instance by default.