unregister command not works

i need unregister one command to my server, but it not works. The result is:

Code:

Call to a member function unregister() on null

My code is:

PHP:

$commands = ['plot', 'myplot'];

foreach ($commands as $cmds) {
      $map = $this->getServer()->getCommandMap();
      $map->getCommand($cmds)->unregister($map);
}


I use the 3.11.1 api version for 1.14 bedrock edition.

 

PHP:

$map = $this->getServer()->getCommandMap();
$map->unregister($map->getCommand($cmds));

 

I get this error:

Code:

Argument 1 passed to pocketmine\command\SimpleCommandMap::unregister()

 

unregister code should be as follows:

PHP:

$commandMap->unregister($commandMap->getCommand("commandName"));

 

PHP:

$commands = ['plot', 'myplot'];
$map = $this->getServer()->getCommandMap();

foreach ($commands as $cmd){
    $map->unregister($map->getCommand($cmd));
}

According to what the others said, this should work.