Getting more than one value from sval (XML-RPC)

I know how to pass the string in PHP or ASP to SL using XML-RPC, but in the script in SL, how do I breal sval up so that I can use it for 2 different pieces of data?

For example if I am passing this:

Birthday Event,Monday

I want to have
string dataEvent = ???? someway to get that first value from sval
string dataWeekday = ???? someway to get that second value from sval

Then I can use it later:
llWhisper(0, "Event: " + dataEvent + " will be held on " + dataWeekday + "!!!";

    remote_data(integer type, key channel, key message_id, string sender, integer ival, string sval) {
        if (type == REMOTE_DATA_CHANNEL) { // channel created
            //DEBUG(["Channel opened", "REMOTE_DATA_CHANNEL", channel, message_id, sender, ival, sval]);
            gChannel = channel;
            //llSay(0, "Ready to receive requests on channel \"" + (string)channel +"\"");
            state go; // start handling requests
        } else DEBUG(["Unexpected event type", type, channel, message_id, sender, ival, sval]);
    }

Any ideas or solutions for this?

The simplest way is llCSV2List.

list parts = llCSV2List(sval);
llWhisper(0, "Event: " + llList2String(parts,0) + " will be held on " + llList2String(parts,1) + "!!!");

If the data might contain a comma, pick another separator and use llParseString2List instead.