DHTMLX Ttree - Plus sign- How to eliminate if item has no ch

I have a tree that loads an xml and it works perfectly…

But i have a bit problem.

All items have by default the plus sign. Not only the items with childrens have the plus.

How can i solve this?


The “+” sign show when
a) XML has child rows in XML
b) row tag has xmlkids attribute set

If to mentioned issues is not actual in your case - please provide a snippet of XML for which problem occurs.