enableLoadingItem

I am getting an error saying enableLoadingItem() for the tree component is not a defined function.  I do have the professional version.
_tree.enableLoadingItem(true);

Also for your knowledge base there is no way to respond to an answer, so it seems we always have to start new questions?

Also I can not ever seem to get a response via email, only here in the knowledgebase.




I am getting an error saying enableLoadingItem() for the tree component is not a defined function.
You need to include next js file
    dhtmlxtree_lf.js

>>Also for your knowledge base there is no way to respond to an answer, so it seems we always have to start new questions?
“full” version of KB
    support@dhtmlx.com ?