How do I pass parameters to public class AXBackend extends org.daypilot.core.Backend from jsp page? Header field has only 1 String field called Control and it is always set to "dpc" (in Calendar case).
Do you mean the "data" parameter from the xxCallBack methods [e.g. eventClickCallBack(e, data)]?
This wasn't available until now. I've added a new property called Data to the Header property. So you are now able to reach it from your AXBackend using the following call:
JSONObject data = getHeader().getData();
An updated build will be available soon.
Please check build 1.0.44: