Someone

#define AFK 0x6AF7E1FF

new afk[MAX_PLAYERS;

if (strcmp(cmd, "/afk", true) == 0)
	{
	      if(afk[playerid] == 1) return SendClientMessage(playerid, RED, "You are already 'AFK' ");
	    else
	    {
	        afk[playerid] = 1;
	        SetPlayerColor(playerid,AFK);
		 	TogglePlayerControllable(playerid,0);
			GetPlayerName(playerid, playername, sizeof(playername));
			format(string, sizeof(string), "[NEWS]: %s is now Away From Keyboard[AFK]. ( /afk )", player);
			SendClientMessageToAll(YELLOW, string);
			SendClientMessage(playerid, GREEN, "Your status is now 'AFK'");
		}
		return 1;
	}
	if (strcmp(cmd, "/back", true) == 0)
	{
 		if(afk[playerid] ==0) return SendClientMessage(playerid, RED, "You're not 'AFK'");
	    else
	    {
	        afk[playerid] = 0;{ SetPlayerColor(playerid,PLAYER_COLOR);}
	        TogglePlayerControllable(playerid,1);
			GetPlayerName(playerid, playername, sizeof(playername));
			format(string, sizeof(string), "[NEWS]: %s is back from being A.F.K. ( /back )", player);
			SendClientMessageToAll(YELLOW, string);
			SendClientMessage(playerid, GREEN, "You are back.");
		}
		return 1;
	}