I didn't touch maps in years but I think you need:
push offset "fore-2"
push offset "forest\\fore-2.ase"
call "function that use those 2"
where "fore-2" is name of minimap image located in Field\map
title will be in Field\Title (you need to add "t" to the end, e.g. fore-2t.tga)
field((char *)mine_1, (char *)"Mine\\mine-1.ASE", (char *)"mine-1");
fieldCmd((char *)mine_1, 18006, -34740);
teleport((char *)mine_1, 17944, -34641, 246, 64, 32, 100, 0);
teleportTo((char *)mine_1, (char *)ice1, 35352, 31928, 829);
environment((char *)mine_1, fldT_dungeon, skyT_rainy_sky_7, skyT_rainy_sky_7, skyT_rainy_sky_7, bgmT_dungeon_gloomy_heart, 0, 100, 3);