Thanks for your help! - I figured it out.
But actually I wonder if it really must be so complicated just to add the actual time to a push notification.
rule “Debug Trigger Alarm”
when
Item Trigger_SW changed
then
if(Trigger_SW.state == ON) {
var Date_tmp = Zeit.state.toString.split(“T”)
Eventzeit.postUpdate(Date_tmp.get(1))
pushNotification(“Debug-Trigger:”, "Es ist: " + Eventzeit.state) // this is for prowl push
}
end