SPSS mrStudio Drop down list

Single question with a drop down list.

//surveyscripting.com

Metadata:
Q1 "Where are you from?" style(control(type="droplist")) categorical[1..1]
{
  a1 "USA",
  a2 "Other"
};

Routing section:
Q1.Style.Control.Type = controltypes.ctDropList
Q1.ask()