Hi,
I think the closest you are going to get is using the tab character in a drop down display value. The tab stops are set at 8 characters and I haven't found a way of changing that. Depending on the values you also might need to use a fixed width font.
But if you data is simple enough then it might work. Here is a sample https://sites.google.com/site/livecycledesignercookbooks/home/TwoColumnDropDown.pdf?attredirects=0&d...
The code in the initialization event is;
this.setItems("AL\tAlbania,008,DZ\tAlgeria,012,AS\tAmerican Samoa,016,AD\tAndorra,020", 2)
Regards
Bruce