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onOpenEnd event not being called

Hi,
We are using DHTMLX 2.0 tree grid control. When I click on the + sign to open a tree, the control sends a request to the server to fetch data that will be displayed in the grid as child rows. During this process we want to display a message to indiate that data is being fetched. Attaching onOpenStart to a function to perform this display works fine. But, once the data is fetched, the onOpenEnd event is not fired, where we clear the message. Here's the sample code. I added alerts to this function to see if it is being called and it doesn't seem to be called at all. Please let me know if I am missing anything here.

        mygrid.attachEvent("onOpenEnd",OnOpenEndHandler);
        function OnOpenEndHandler(id,m)
        {
            //only if we are opening
            if (m==1)
            {    
                hide_gridloading_popup();

            }
            return true;
        }

Thanks
Murali

Problem can't be reconstructed in local samples ( working sample sent by email )
By the way, instead of onOpenStart | onOpenEnd , you can use onXLE and onXLS , which works for all data loading operation including dyn. loading in treegrid. 

I am having the same issue.  Was this ever resolved/figured out?  It seems maybe a library file is messed up, or there is something more to do besides attaching the event to the grid?

thanks.

Issue with "onOpenEnd" event was confirmed and fixed. Fix will be included at the next dhtmlxTreeGrid version.