Hi,
What are you trying to achieve?
If you want an Fsm to communicate to a c# then you should use a public method in your c# that the Fsm will call using a dedicated custom action, that custom action will know the component and you will inside this action know the owner and when calling that method you pass yourself.
First step is to create an action that call a specific method on a specific component ( plenty of example on the regular actions, check out "AudioPause" and base your custom action on this.
If you need a working sample let me know.
Bye,
Jean