Modifying ICAL template file

Dear all,

I was searching how to change the content of the ical file through the modification of the template. In order to add the event owner and the custom attributes we are using (quite important as they give the physical and technical requirements for our sport events).

As I understand the thing with my basic knowledge in IT, all information for an event comes from the variable $EM_Event. But I couldn’t find any help or description of this variable that would help me extract the data I need. I tried to jsonify $EM_Events to a file in order to sort this out, but it failed (I’m not even sure if this is possible).

So I tried my best but I reached the limit of my knowledge in PHP. Do someone have a comprehensive guide to this variable?

Many thanks in advance for your kind support.