[mkgmap-dev] Setting map name when seen in eTrex Vista

I have created 2 sets of maps and when I load them into the GPS they both have the name in the menu to hide show a map set, see menu.bmp When I go to individual maps I can see the correct names, see bike & car.bmp I have tried every option on mkgmap but this never changes, any one know where the name is set? Peter...