Wayward, I was wondering the same as you, and figured I could try to simply prepend a dot (".SetPosition(1,2)") and it actually worked (called the global version). Nice isn't it :) ?
That's what I was after; prepending a dot does it.
I'd actually tried this exact syntax before posting, but it appeared not to work. I tried it again and now it does. It failed for me the first time because I had multiple functions calls and I hadn't dotted them all (duh!).