I have a problem with arduino mega and STOP button from LabView

Hi Everyone, I have a problem with the "STOP" buttom from loop "While"

I connected my arduino mega with LabView,It's running OK, but when I want to stop the program , dont work , So the programa running again automaticly , and for stop the program I must press the "BREAK" button to stop from LabView.

Some one can help me ?

Thanks very much .

PD. If I use BREAK button , can harm the Arduino ?

This is not a Labview forum. This is an arduino forum.

i think the problem is arduino, therefore I posted here . help

If you really thought that, you would have posted some code.