Passing variable from captivate 5.5 to Lectora Enterprise

Can't get it working!!!

In Lectora I defined a variable. SimulationDone. In de variable manager I initial declare this variable with Z.

In captivate on the last slide I define on the On Enter Action the following:

flash.external.ExternalInterface.call("VarSimulationDone.set","A")

I even tried

ExternalInterface.call("VarSimulationDone.set","A")

In Lectora I defined on On Timer to read the value of the variable.

But I cannot get it to work that the variable changes into A.

HELP!!!!!!