Logic

a!localVariables(
  local!q1,
  local!q2,
  {
  a!columnsLayout(
    columns: {
      a!columnLayout(
        contents: {
          a!dropdownField(
            choiceLabels: {"Yes","No"},
            choiceValues: {"Yes","No"},
            label: "Question 1",
            labelPosition: "ABOVE",
            placeholder: "--- Select a Value ---",
            value: local!q1,
            saveInto: {
              local!q1,
              if(
                local!q1="Yes",
                a!save(
                  local!q2,
                  "No"
                ),
                {}
              )
            },
            searchDisplay: "AUTO",
            validations: {}
          )
        }
      ),
      a!columnLayout(
        contents: {
          a!dropdownField(
            choiceLabels: {"Yes","No"},
            choiceValues: {"Yes","No"},
            label: "Question 1",
            labelPosition: "ABOVE",
            placeholder: "--- Select a Value ---",
           value: local!q2,
            saveInto: {
              local!q2,
              if(
                local!q2="Yes",
                a!save(
                  local!q1,
                  "No"
                ),
                {}
              )
            },
            searchDisplay: "AUTO",
            validations: {}
          )
        }
      ),
      a!columnLayout(
        contents: {}
      )
    }
  )
}
)

try the above code and see if it works for you

You can easily do this manipulation in the component's saveInto. Check for the value and using an if() statement, simply do the required manipulation. 

Any update?

HarleyOlsen  What update are you looking for? This question has been answered.