Thx but i have a result a little different!
X & Y are negative at the screen! Does this normal ?
And for slider at 2 I have not your "5,5" but "2,2" :)
if i don't wire the Slider on scaleUVW (UVW regulated at 2 from start) size don't move!

But the big problem is the negative one!

Send the .nod for see if i have a bug inside the function itself...

EDIT: OK I have found : I must don't wire the POINT! :)
So I have exactly your result! :)

Rest only the negative points for the direction of moving : why we must input (-5,-5) and not (5,5) ?