Ok, so I'm messing with the free "Backpacks" plugin* and did this :
private void BackpackOpenCommand(IPlayer iPlayer, string cmd, string[] args){ BasePlayer basePlayer = iPlayer as BasePlayer; if (!VerifyCanInteract(iPlayer, out basePlayer) || !VerifyHasPermission(iPlayer, UsagePermission) || (basePlayer != null && (!basePlayer.IsBuildingAuthed() && !basePlayer.HasPrivilegeFromOther()))) return; OpenBackpack( basePlayer, IsKeyBindArg(args.LastOrDefault()), ParsePageArg(args.FirstOrDefault()), wrapAround: false );}"You need Building Privilege to open Safe Storage" to the player trying to open the backpack? *