>Ok, please someone who is thinking more clearly than I this morning refresh my memory on how I can trap for when the value in a variable map_type(1) changes in a program? My variable's value is changing unexpectably and I need to determine when it occurs in the app. Can this be done using the debugger in VFP8?

Tracy,

Put your variable in the Watch window and doubleclick in the margin to set a breakpoint on it. Your code will stop when the value changes. If you're looking for a certian value you can use MyVar = "Something" as the expression and your code will stop when that changes from .F. to .T. or back.