[Youarex]

Much more simple:

pawn Код:

CMD:test(playerid, params[])
{
    new
        str01[32],
        str02[32];

    if(!sscanf(params, "s[32]s[32]", str01, str02))
    {
        //Your code
    }
    else
    {
        SendClientMessage(playerid, -1, "Usage: /test <string1> <string2>");
    }
    return 1;
}

Assuming you're using ZCMD or y_commands.