Debugger stops when i>10

Hi there,
is it possible to set an option in the debugger that the program stops when a variable gets a special value? For example when i gets > 10 or something?
In my program I change a variable very often, but at one point, it gets an unrealistic value. I could test this variable everytime when I change it, but thats not very elegant. I can set with Alt+F9 a breakpoint when the value of i was changed, but thats not quite that I need.

Markus