Hi,
Unfortunatly, PlayMaker doesn't support uInt as an fsm Variable.
the solution is to either modify your script if it's yours to expose an api to work with that uInt using a regular int, or to create a custom action to control this script uint property via a setter and getter action that accepts an FsmInt.
I can provide your with a sample showing how to do this, then you modify it to match your script.
Bye,
Jean