Activating sequence through widget

So I am trying to when you interact with an object a widget appeares and you can choose to play a sequence and during the sequence you can choose to pause or quit it. But when I try to setup the widget that appeares after you interact with it and say you want to play the video this error appeares. And I don’t know what I am doing wrong with setting up what I want.
(the first image is the event graph of the object you interact with, the second one is the widget that says wich event should play, So if you continue were you left the sequence of or if you play it from the beginning. I still have to set that up but I still have to figure out how…)