Setting Data source to combobox column


I am new to DHTMLX Tree grid, Please let me know how to set data source to the combo box column in the grid, i know that we can configure with keyword “co” we can get combo column ,but how to set the datasource to the combo , whether we need to give it in any format in XML ? or any other way ,if so any links for sample. will be helpful.


Unfortunately it is not available to load the options to the “co”/“coro” column from the external file.
Such feature is available with “combo” excell only.
Here you can find a working example: … combo.html