Cascade combobox


Is there a way to have combo box in cascade, for exemple select the country in the first combo and then the region in the second one (depending of the country of course)?

I looked at combo_groups here : … roups.html but I don’t think that is the same thing I need.

Thanks for your answer!

Maybe I’m missing something, but above feature do the same - it shows the second combo after selecting something in master. Data in second combo depends on the master selection. … _extension