[FE7] Arena Weapons Modification

Is there a way to control which weapon can use your units?
I made 4 classes for the mages (Wind, Fire, Thunder and Ice), but if I enter in the arena with any mage they use a Fire tome, even if that tome is locked to Fire Mages.

it is decided by your unit’s weapon level.

So, there’s no way to force Thunder, Ice and Wind Mages to use their own elemental magic?
… I think this would be made with ASM, but I don’t know how :Y

When it comes to ASM, nothing will be impossible. Maybe someone can do that for you, good luck~