InfoPath Dev

I have an infopath form and added an external data source (web service) that returns xml in the following format:

<questions>
    <question>
          <questionID>1</questionID>
          <questionText>Choose Color</questionText>
          <choices>
                  <choice>
                        <displayname>Red</displayname>
                        <value>1</value>
                  </choice>
                  <choice>
                        <displayname>Green</displayname>
                        <value>2</value>
                  </choice>
                  <choice>
                        <displayname>Blue</displayname>
                        <value>3</value>
                  </choice>
          </choices>
    </question>

    <question>
          <questionID>2</questionID>
          <questionText>Choose Color</questionText>
          <choices>
                  <choice>
                        <displayname>Germany</displayname>
                        <value>49</value>
                  </choice>
                  <choice>
                        <displayname>Singapore</displayname>
                        <value>65</value>
                  </choice>
          </choices>
    </question>
</questions>

I created a repeating section for the questions, but I want the choices to be displayed in a combo-box, instead of another repeating table/section.
How do I supposed implement this? 

Any kind of help is greatly appreciated.

Hello Welcome to the Forums,

Populating dynamically values for drop down you have to add/modify the values for the external data source using code.

For drop down, list box entries should be point to ‘choices' node then you will get all the choices value in your drop down.