Ok since the mappy script can only calculate the amount of tiles that make up the width and height of the map it made think: "ok if that is the case why can't i just multiply the mappy's file 'width' and 'height' by the size of the tile" so here is the code i added to the script:
map_width = mappyMapWidth * mappyTileSize;
map_height = mappyMapHeight * mappyTileSize;
and when i ran the program with a 320x240 map i got 320x240 in those respective var's so good luck