Hello at UT !

I have a form with animated shapes on it. (No joke, it's animation of a automatic door)
I animate the shapes in this style:

*---------------------------------------
* Timer interval = 1

x = x-2
thisform.shape1.left = x
if x < 10
x = 470
endif
*---------------------------------------

In Vfp 3.0b the animation has worked correct. But in VFP6 the shapes flicker around and they
don't scroll smoothly anymore.

Exception:
the animation works correct, if I have a open messagebox. What can I do for a smooth scrolling animation without a open messagebox.

Any ideas ?

Thanks

Martin