mchulet
I was just wrestling with this myself and figured out how it works:
Whenever you call the function, add the new parameter into the parenthesis. Here would be an example in the Event sheet:
SYSTEM --> On start of layout --> Function --> Call "nameOfYourFunction?(7)
Then to change it on the next use would be:
SYSTEM --> On start of layout --> Function --> Call "nameOfYourFunction?(559)