SDK, How to pass argument to my own plugin...

Hey

I'm neck deep in sdk and already losing my marbles here... so maybe some1 can give me a hint.

Say I have this in JSX to run my plugin

var miTestPluginVar= stringIDToTypeID( "miTestPluginUniqueIDBlablabla" );
executeAction( miTestPluginVar, undefined, DialogModes.NO );

How could I pass to it a string? Can I ? 

I take I will be able to "fish it out of " > 

DLLExport SPAPI SPErr AutoPluginMain(const char *caller,
                                     const char *selector,
                                     void *message)

Message somehow, by casting it to something and then "black magic" happens. But to get to that point... 

Regards

Dariusz