why vardump_update_or_insert?

Hi. Great module! Making my life easier for sure.

Just curious why in your code you are using a custom function vardump_update_or_insert instead of variable_set? The db_num_results is giving me errors and code is not working as is. However it was a great starting point and has been painless to get it working, changing the vardump_update_or_insert calls to variable_set calls

Thanks.