[ATGOggy]

Try this:

PHP Code:

if ((newkeys & KEY_CROUCH) && !(oldkeys & KEY_CROUCH))
    {
        if(GameStatus == 2 && IsReady[playerid] == true)
        {
            if(PlayerCurrentlyCrouched[playerid] == false) // Not currently crouching.
            {
                PlayerCurrentlyCrouched[playerid] = true;
                for(new i=0; i < MAX_PLAYERS; i++)
                {
                    ShowPlayerNameTagForPlayer(playerid, i, 0); 
                }
            }
            if(PlayerCurrentlyCrouched[playerid] == true) // If the player's crouching.
            {
                PlayerCurrentlyCrouched[playerid] = true;
                for(new i=0; i < MAX_PLAYERS; i++)
                {
                    ShowPlayerNameTagForPlayer(playerid, i, 1);
                }
            }
            
        }
    }
public OnPlayerStreamIn(playerid, forplayerid)
{
    if(IsPlayerCurrentlyCrouched[playerid])
    {
        ShowNameTagFprPlayer(playerid, forplayerid, 0);
    }
    return 1;
}