Signal Binding [5.0.0.0;5.9.9.9)

Hi @dalgwen and thanks for you reply.
So what i understand is, that you can use a script and rules to fire up a signal message.
However you cannot pass on own text in terms of a value.
Now my ultimate goal is to call a global function like the below from any rule since i need my own messages and not states of items etc.

sendSignalMessagetoMyPhone(textvariablecomeshere)

I also checked Design Pattern: Separation of Behaviors but it doesnt look like that i can use the signal binding.

Any clues?