[Kirollos]

pawn Код:

public OnPlayerText(playerid, text[])
{
    if(strfind(text, "Stuck") != -1)
    {
        TogglePlayerControllable(playerid, true);
        ClearAnimations(playerid);
        SendClientMessage(playerid, -1, "Now you can walk?");
        return 0;
    }
}

Maybe That? (the code is untested)