option button remains grabbed

[rev at armbase.com]

Hi All

I have an option button added to a form with the script
on mousedown
    if the mainstack of this stack is Armbase then
        if the controlkey is down then
            grab me
            end if
            end if
            end mousedown

When the button is on the destination stack it can be grabbed when the control
key is down. OK no surprise there.... but it remains grabbed and no matter
where the mouse goes (and if you mouse down twice) it follows te cursor.

Any ideas?
I tried it on a fresh stack and it does the same. So no stack legacy.


All the best
Bob