Custom Loading Type using JSON

Are there any samples that use JSON (NOT XML) for a custom loading type?

It does not appear that the JSON is getting passed to the process function properly, even though switching from a custom to a JSON loading type works with fine.

Unfortunately there is no ready samples for the custom JSON type.
You may try to use the following tutorial:
docs.dhtmlx.com/doku.php?id=dhtm … s_creation
It should work well for JSON type.