[Exolent[jNr]]

new szMessage[ 192 ];
formatex( szMessage, charsmax( szMessage ), "%L", LANG_PLAYER, "LANG_KEY_HERE" );
send_hudmessage( 0, szMessage, /* other arguments here */ );

// ->

new szMessage[ 192 ];

new iPlayers[ 32 ], iNum;
get_players( iPlayers, iNum );

new iPlayer;
for( new i = 0; i < iNum; i++ )
{
    iPlayer = iPlayers[ i ];
    
    formatex( szMessage, charsmax( szMessage ), "%L", iPlayer, "LANG_KEY_HERE" );
    
    send_hudmessage( iPlayer, szMessage, /* other arguments here */ );
}