are you using another mod that also changes this?
I do use 10+ other server mods and a few client mods, I believe none of them changes the bot cap value anywhere as they are not relevant to core configurations (or not I maybe wrong).
Additional, the weapon durability setting of the assault bot not working for me as well. They are always default values even I tried changing them in the item file and the legacy item file, again until I edit the hex in the sever.exe.