like this?:
when green flag clickedFor me, it works.
forever
set [distance v] to (((([x position v] of [Sprite1 v]) - ([x position v] of [Sprite2 v])) * (([x position v] of [Sprite1 v]) - ([x position v] of [Sprite2 v]))) + ((([y position v] of [Sprite1 v]) - ([y position v] of [Sprite2 v])) * (([y position v] of [Sprite1 v]) - ([y position v] of [Sprite2 v]))))
end