Hello, since all of you were so gentle to resolve immediatly my problem, i hope you can give me some other suggestions. How you know, there are a lot of very nice units and leaders you can download, but the problem is : how to use all together? because if i do a mod with material i download, it will be for that only one...So i tried to put files of a unit i used in mod, in customassets folders,but they don't work . I think it's because customassets wish the whole original file of the game, inside whom you must put modifications for new units you did. With mod it's all more simple, because i create such folders : ModNamexxx\assets\modules and inside i put this files :CIV4ArtDefinesSchema , CIV4UnitSchema, xxxxx_CIV4GameText ,xxxxx_CIV4UnitClassInfos ,xxxx_CIV4UnitInfos , xxxxx_CIV4ArtDefines_Unit and of course the folder with graphic files. Inside files i put only the datas for the single units, and when i launch the mod all works regular. You have some suggestions on how to use more units in a strike? Maybe i must compose inside the files i said, the various datas of all units i wish to use...What do you think?