trying to forward money to friend with tip float text help

///TRYING TO MAKE A SCRIPT THAT WILL  HAVE FLOAT TEXT WITH DONATIONS THAT WILL PASS THE  MONEY TO SIM OWNER AS DONATION I have to declare these global variables at the top of the script so i can refer to them anywhere in it

key friend = "e80e7fee-95e0-474a-a700-1029696d72fc"; // Mayfield1950's  -- you might want to alter this

string friend_name;  // because of the way lsl works, i have to get the name in the script itself
default
{
    state_entry()
    {
        llRequestPermissions(llGetOwner(), PERMISSION_DEBIT); // ask for permission to debit the owner's account -- needed to pay money to someone else
        llRequestAgentData(friend, DATA_NAME); // get friend's name
        llSetPayPrice (PAY_DEFAULT,[50, 100, 250, 500]); // put in some suggested amounts
    }

     dataserver(key queryid, string data)

    {
        friend_name = data;  // fill in the value for the friend_name variable
        llOwnerSay("going to pass donation to "+friend_name);  //make sure we've got this right
    }

    money(key giver, integer amount)
    {
         total += amount;

        llSetText("Mayfield Sim " + " L$ " + (string)total + "\nLast donation: L$ " + (string)amt + "\nby " + llKey2Name(id), <1,1,1>, 1);

llSay(0, "Thank you , "+llKey2Name(giver)+ ", for your support of L$"+(string)amount+",  which is being forwarded to "+friend_name+" right now");

        llGiveMoney(friend, amount); // give the amount I've just been given to my friend
    }

    changed(integer change){

        if(change&CHANGED_OWNER){
            llResetScript();
        }
    }
}