Dhtmlxtree JSON load issue

Hi all,
First time looking at your products, look neat. I am trying our dhtmlxtree but have an issue I am stuck with. Can you please help.

My error:

ErrorType: LoadXML Error: Incorrect JSON

My HTML / script:



I think I need to convert my JSON into a tree. Is there a way to do this via this library? I am pulling the data from MySql… and notice lots of entries in other forums over this same issue.

At start you can read the next documentation about JSON loading:
docs.dhtmlx.com/doku.php?id=dhtm … ta_loading
And there are samples abiout it:
dhtmlx.com/docs/products/dht … n_support/