Use Calendar with events on a javascript callback function...

[quantaxproj]

Hi everyone,
I like so much this useful calendar, but I've a little issue that hope you help me to find a solution...
I can't use php on my server (php is not allowed) so the Server has got a special executeAjaxEvent with a callback function in which I've data returned...

for example :
I request all events in 2018 (year) with executeAjaxEvent(2018)...
and after request... I get results in this callback function... with ondatareceive...

And.... only at this point I've events available to fill the calendar....
How can I use this?

Thanks in advance