Pick the Element from KeySchedule

I need to set all Walls on a spezific Parameterfilling, this parameter is from a KeySchedule.

I select the View and the filld Elements-name. But how can I get the Element of the KeySchedules? After get the Elements I can select the spezific element by name and change all walls without defination with this Element.

KeySchedule-Element.dyn (5.8 KB)
Wall-Parameter-Change_by_KeySchedule-Element.rvt (340 KB)

can anybody help?

Thanks Heinrich