OnResourceAvailable

Hello everybody!
I have a problem with my model. The trigger OnResourceAvailable of the Dispatcher14 doesn't work. If I connect this dispatcher to the Crane15 in the model trigger OnReset, it works. But if I connect this dispatcher in the trigger OnExit of the Queue3 it doesn't work. Why? Can you help me?
I attached the model that doesn't work.

Thank you!

For me, this model raises a lot of questions about why you're doing it this way, but for now let's just deal with the immediate question you pose.

I think the dispatcher isn't correctly 'primed' to use the port that you add because it hasn't done a reset. If you just open the output of the dispatcher after making the connection it should solve it.

openoutput(node("/Dispatcher14",model()));