[Clad]

Use the one of the wiki.

pawn Код:

public OnPlayerClickPlayer(playerid, clickedplayerid, source)
{
    new message[32];
    format(message, sizeof(message), "You clicked on player %d", clickedplayerid);
    SendClientMessage(playerid, 0xFFFFFFFF, message);
    return 1;
}

Let me know if that worked for you