Setting Field Visibility Based on a Dropdown Selection not showing

[damian31044151fy17]

Hello Community, 

I am trying to make a Text field "Details" appear after click the option "Yes, conditionally" only. If this option is not selected then it would the Text field  "Details" will be hidden.

This is the code I am using and it is not working but I cant figure out why:

var nHide = (event.value=="Yes")?display.visible:display.hidden;
this.getField("Details").display = nHide;

[try67]

The code seems fine. What's the issue with it, exactly?

[damian31044151fy17]

Nothing is happening, it wont work but im not sure if there is an additional thing I should do in my adobe acrobat settings? 

[try67]

- Where did you place the code?

- Did you check the JS Console after changing the value of the field to make sure there are no error messages?