Thanks! I'll try to adapt the example code you gave.

Let me know if that other solution works out, could be a better option.

I wanted to try to edit some units to add variety to the army, after completing a Macedon campaign. It bugged me that almost all skirmishers including many provicial skirmishers map to light javelinmen in FOG2. So I wanted the following:

Remap improved javelinmen to a 50:50 mix of light javelinmen ...