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dhtmlxtree

I'm using the refreshItem method, though I get weird errors...

Here is the xml

<tree id='0'>

<item text='RootTag' id='1839_598_0_14'>

<item text='z' id='2554_623_1_14'>

<item text='zx' id='2555_624_2_14' />

</item>

</item>

</tree>


I remove two items and end up with the following

<tree id='0'>

<item text='RootTag' id='1839_598_0_14' />

</tree>


When I tried to do a refreshItem with id='1839_598_0_14' , I receive the following error in my firefox error console

str.indexOf is not a function


I tried using the debug dhtmlxcommon.js that I saw mentioned in another post http://dhtmlx.com/docs/products/kb/index.shtml?cat=search&q=2545&ssr=yes&s=dhtmlxcommon

Is there anything else I can do ?

The only way, how such problem may occur - you have not provide the url from each item can be refreshed.
It can be done as
    tree.setXMLAutoLoading(url);

If url not set, the tree doesn't know from which source it must refresh item and crush with mentioned error message.