Framework builder is generating code with errors

Hi I'm trying to use dynamic framework and the extension is generating a wrong code I'm attaching an example with a clean php page.

What condition are you trying to use? I see you have "mod" specified as the variable, but all variables in php need to start with a: $

What exactly are you trying to do? Maybe I can suggest the correct inputs.

Hi Ray, as the trigger variable I am putting mod, if I put $mod it also generates an error because the code generated will be:
switch(isset($mod)?$mod:" "){
If I just leave it as mod it will work if I erase isset:
switch((mod)?mod:" "){
or also will work if I leave it like this:
switch(isset($mod)?mod:" "){
but the behavior will dissapear from the behaviors panel

The attached picture shows how I am filling the insert plug-in dialog box

This looks like it would be correct to me:
switch(isset($mod)?$mod:" "){

What is "mod"... where and how is it defined?

It will be used like this:

index.php?mod=contact

Use: $_GET['mod']

as the variable

Thank you Ray

You are welcome

Hi Ray I'll be in touch