Having a bit of a problem using this command (/ob_inventory restore) to restore my inventory after an unfortunate death. Mainly, every time I try to use it, I get a warning saying that I do not have permission to use that command. I've tried searching both this forum and the Internet at large, but the instructions for setting permissions to use commands are clear as mud. The world is an Infinity Evolved 2.2.2 world, survival, single player. Any suggestions or tutorials?