setChecked no loger part of dhtmlxcombo.js?

Recently I tried hard to check a value of a combo with the help of setChecked()-Function.
Since it didn’t work, I had a look on the source of dhtmlxcombo.js, and there is no such function anymore. I’m using v.3.6 build 131108 of the free edition.
What is the best way check a option now?

Thanks in advance.

Hello,

“checkbox” options require including dhtmlxcombo_extra.js extension. Please take a look at the dhtmlxCombo/samples/03_options/03_combo_options.html demo.