How do I make the Loop to check a Variable every 1 second?

[elik]

Hello, I need to make a while loop that checks a global Variable every 1 second. I tried to make it with No time limit, but it make the system crash,May be because it is an infinte loop.
thanks,
here is the code:
While Loop_Working
If Global_Flag = True Then
Loop_Working = False

GoTo Handle_Second_One
End If
Wend


Eli