Error with key + in dhtmlxcombo

Good afternoon,

I have a problem with dhtmlxcombo.

when i key press + in the dhtmlxcombo, the system generates a error.

The filter in dhtmlxcombo is active with enableFilteringMode(true);

Same errors I see in the example in page in filtering mode…

Attachment the screen image with error.

I need your help!!



Known problem, please send your complete demo to

Thanks for your response.

You can see the demo in the website of dhtmlx.
Its very important work with mozilla firefox and activate the firebug complement for see the error in the dhtmlxcombo live demo for filtering mode.


I need a demo just to fix your dhtmlx.js file.