I really don't get this, but Sprite[Platform].VectorX works now.. I've tried the exact same thing before (by typing it and by using the browser) and it only returned 0 or - then. Now it returns actual numbers..
Thanks everyone for the help. I guess I should've restarted Construct to try again or something..
edit: I know what the problem was. My text box wasn't big enough for the numbers to show.. I could either see a 0 or a - because the text box ended at that point.. Rookie mistake i'm sorry.