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cmdprompt as well, so I suppose it's not a bad habit to get into. :)echo %myvar%will be run asecho OldValueOfMyVar. This problem can be resolved by using the Delayed Expansion feature (only available in batch files though). So try the following inside a batch file:setlocal EnableDelayedExpansion && set MyVar=MyVal && echo !MyVar! && endlocal. (NOTE: The feature requires you to use!marks in place of the%symbols.