A command not working

All command so works but /setclan 20 doesn’t work it says you don’t have permission to access that command I really want my clan to go to lvl 20 soon it is very hard if u guys can allow me to use it plxx allow clan name is BLUE WHALE

You don’t have a permission, because you not a moderator or admin. And so 20 clan lvl it’s a don’t very hard, just play clan war.

Ok…