[Retardedwolf]

Use ZCMD and sscanf.

pawn Код:

COMMAND:healplayer( playerid, params [ ] )
{
    if ( IsPlayerAdmin ( playerid ) ) //Change to likings
    {
        new
            tPlayer,
        ;
        if ( sscanf ( params, "u", tPlayer ) ) return SendClientMessage ( playerid, 0xFFFFFFAA, "SYNTAX: `| /healplayer [ Target player or name ]`" );
        else
        {
            SetPlayerHealth ( tPlayer, 100.0 );
        }
    }
    return 1;
}

If you're new to scripting Pawn in SA:MP you should start using scripts that can help a lot such as using MySQL, zcmd, foreach, sscanf and a few others.