You could also try DEBUGOUT map_type(1) in several places to narrow down where it changes. Dropping this variable in the Watch window of the debugger, then double clicking in the grey column to the left of the variable in the Watch window will place a break point on its value as well.

>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?
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>Many thanks!