simple printing of digits on numeric panel

HELLO,

I am new to lab windows CVI, all I have to do this,just printing number on numeric panel using start and stop button.

 but I am not getting desired result

 before pressing starting button my timer starts automatically,number displayed  on screen and  after prseeing start button numeric number stops.

So, my start button function is not working properly.

Kindley give me suggestion.

THANK YOU