Cascade Filtering Box - Multibox Related

[#1]

Hello,

I am currently using Multibox to display Region --> Country --> City

However, it looks like multibox requires 3 clicks (3 radio buttons) to pick the city.

Is there another object where I can just cascade through the first filter (Region) to get to the city that I want?

In another word, could there be just one radio button that can cascade down when I click on each selection?

For example, if I click the radio button of Region (ie Europe), the object will then display the list of Country based on Europe selection, and then the same for City all within the same radio button. 

Right now, multibox has 3 radio buttons.  Need to click on all 3 radio buttons right now to filter down to the city I want.

This is not a big deal, but your insight is appreciated!

[#2]

You can create a drill down list with Region - Country - City.

Do this at Settings - > Document Properties - > Groups

After you have created the drill down group you can use that group as a list box.

The list box will drill into the next field after a selection is made.

Hope that is what you were looking for.