Set gamemode to creative in new worlds?

im trying to set the gamemode to creative on my creative world and it is accepting my string but it isnt actually giving me creative. ive used both nucleus and projectworlds and have had the same results. spoke with someone in the nucleus discord and they mentioned it might be something to do with sponge. anyone know anything about this, or a workaround to enable creative mode for all players in a particular world?

Are you talking about the creative option in ?