Hi,
I would recommend you change the Yes/No checkboxes to be a radio button group, as in this group only one field can have a value, so either the yes or no can only be clicked, if one is clicked it clears the value from the other one.
You can add a JavaScript on each of the radio buttons that shows/hides the other checkboxes, making so that they cannot be filled in if you radio buttons are not clicked correctly.
```
this.getField("Check Box2").display = display.visible; this.getField("Check Box3").display = display.visible;
```
for when you want to be able to click the checkboxes and
```
this.getField("Check Box2").display = display.hidden; this.getField("Check Box3").display = display.hidden;
```
Obviously you need to change the names of the fields.
Hope this helps
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