String from listen event inside llSetAlpha?

[Ares Baroque]

default
{
    state_entry()
    {
        llListen(0,"","","");
    }

    listen(integer chan,string name,key id,string msg)
    {
      
        llSetAlpha(msg); // Is there a way to change a string into a float from a listen event?
    }
}
 

[Rolig Loon]

llSetAlpha( (float)msg, face_number_goes_here);   //Assuming that you know which face you want to set alpha on (or ALL_SIDES).

[Fritigern Gothly]

Rolig gave you a working answer, but you may also want to do a bit of reading about typecasting, this will help you in the future!

https://wiki.secondlife.com/wiki/Typecast