Hi Tomasz,
If you keep the names in your JSON file consistent you only need the one template. You can try the below JSON string and remove the logic for oSubNodeTemplate - you should get your desired result (all I've done is change your subitems to use the consistent name ("name") which is bound to your template)...
{ "mTypes": [ { "name" : "TYPE1", "description" : "TYPE1_desc", "details": [ { "name": "ITEM1", "mDescription": "ITEM1_desc", "mDetails": { "name": "1", "mValue": "2" } }, { "name": "ITEM2", "mDescription": "ITEM2_desc", "mDetails": { "mNumber": "3", "name": "4" } } ] }, { "name" : "TYPE2", "description" : "TYPE2_desc", "details": [ { "name": "ITEM3", "mDescription": "ITEM3_desc", "mDetails": { "mNumber": "5", "name": "6" } }, { "name": "ITEM4", "mDescription": "ITEM4_desc", "mDetails": { "mNumber": "7", "name": "8" } } ] } ]
};
So if you want the description to display in the tree insetad of ITEM1/ITEM2/etc you will need to change the naming around.
Hope this helps.
Regards,
Ian