[ASK] Making Radio Button Checked / Unchecked Through Evaluation

Dear all,

I have two fields:
1. Field1
2. Field2

I also have two Radio buttons with the same name but with different labels,

1.RadioButton(1).label = "YES"
2.RadioButton(2).label = "NO"

From the fields I have to make an evaluation and set the radio button as checked/unchecked.

The formula is like this:

if Field1 >= Field2 then

radiobutton(1).checked = true; // Radio Button with "YES" label is checked
radiobutton(2).checked = false; // Radio Button with "NO" label is unchecked

else

radiobutton(1).checked = false; // Radio Button with "YES" label is unchecked
radiobutton(2).checked = true; // Radio Button with "NO" label is checked

How can I achieve this in Acrobat? :)