Creative Mode/Game mode switching not working.

Whenever I try to swap game modes I just get an error that the command is unknown.

.gm 1

.gm 0

Is there something I am doing wrong? I appreciate any feedback thank you.

Cyclopropinon It says I have no permission. I'm assuming the creative mode command doesn't work in servers/realms?

EpicmanboiEpic1 well u gotta nee the perms for that, no matter wich way you try, so...