FlagPermissionEvent not firing (Sponge)

[Dockter]

Hello, using version of GD-Sponge-Dev3.

@Subscribe public void onClaimFlagChange(final FlagPermissionEvent event) { System.out.println("Flag changed!"); }

This should print the above debug when in game I type /cf then click on a flag and change it yes? If yes, then the above isn't firing.