change a float via lldialog

Need to change some floats with a dialog. I can't find any examples. Anyone have an example of this or point me in the right direction?
Thanks

Can't you just put the floats as button options in the dialog box then turn the strings into floats in the listen event?

default {
state_entry() {
  llListen(-9999, "", NULL_KEY, "");
}
touch_start(integer num) {
  string text = "Please choose a number.";
  list buttons = ["0.1", "2.3", "3.4", "4.5", "5.6"];
  llDialog(llDetectedKey(0), text, buttons, -9999);
}
listen(integer chn, string name, key id, string message) {
  float variable = (float)message;
}
}

That's a pretty simple example, of setting a float variable with a dialog box.

-Atashi

sendDialog(key id,string valuename,float value,integer listenchannel,integer dialogchannel)
{
llDialog(id, "Change the value "+valuename+" from "+(string)value+" by using the buttons below, alternatively, say the value on channel "+(string)listenchannel, ["+1.0", "+0.5", "+0.2", "+0.1", " ", "-0.1", "-0.2", "-0.5", "-1.0"], dialogchannel);
}

where id is the agent's key, valuename is the name of the value you wish to change, value is it's value and listenchannel and dialogchannel are channels.

listen(integer chan, string name, key id, string msg)
{
if (chan==dialogchannel)
{
if ( msg == "+1.0" ) value += 1.0;
else if ( msg == "+0.5" ) value += 0.5;
else if ( msg == "+0.2" ) value += 0.2;
else if ( msg == "+0.1" ) value += 0.1;
else if ( msg == "-0.1" ) value -= 0.1;
else if ( msg == "-0.2" ) value -= 0.2;
else if ( msg == "-0.5" ) value -= 0.5;
else if ( msg == "-1.0" ) value -= 1.0;

if ( value > maxvalue ) value = maxvalue;
else if ( value < minvalue ) value = minvalue;
sendDialog(id, valuename, value, listenchannel, dialogchannel);
}
}

if you use dialog, there's a nice trick to shutting down the listener... when the diallog is called, also call llSetTimerEvent( 30 ); and in your timer call llSetTimerEvent( 0 ), and either llListenRemove(x) or change to another state and back to clear all listens...

set timer event will keep putting the listen close off till 30 seconds after it's called, so the listen will expire 30 seconds after the last time it's opened