I'm trying to set the Attack of an organ gun on "2". But nothing works. Neither the effect "Change Unit attack" (I try to use "set") Nor the effect "change unit attribute" (I try to change the attribute "attack" with "set 2"
Make sure to set the "type" value to the correct type, you can check an unit attack type by the Genie Editor or by online wiki. For example, "melee" type is 4 and "pierce" type is 3, organ gun have pierce type attack but no "melee" type attack. If you're trying to modify it's attack by type 4, nothing's gonna change.