Tip Jar help

I am thinking about a dj position and i am currently making a tip cube.

I would want to know how to get the last amount donated in L$, who donated the amount, and the total amount of L$.

quickie

// start of script
vector  text_color = <0.00,0.50,1.00>;
integer total;
string  text;

default
{
    state_entry()
    {
        llSetText("Tips", text_color, 1.0);
    }
    
    money(key id, integer amt)
    {
        total = total + amt;
        
        text = llKey2Name(id) + 
        " just gave me " + 
        (string)amt + "$" + 
        "\n Total tips = " +
        (string)total+ "$";
        
        llSetText(text, text_color, 1.0);
    }
}

// end of script

Thanks.