Okay, I hope the solution to this won't be as embarassingly simple as last time.
When I implement something along the lines of
var test = "Hello. I am a Test.";
var dummy = test.Split(".");
I get a "Call to undefined method 'Split'. Ignored."
My search through these forums suggested, that this would happen, if test was [null] or undefined. But it's not. A "Game.Msg(test)" works fine.