FDF - how to check a checkbox?

Question

I'm using FDF to populate a PDF template. On my PDF template, I have a checkbox and radio field called c1 and r1 respectively. What's the syntax I should use in my FDF file to check or select the c1 and r1 field?

I tried things like

<</T(c1)/V(1)>>
<</T(c1)/V(checked)>>
<</T(c1)/V(on)>>
<</T(c1)/V(true)>>

But none of them work.

Answer 1

I found the answer. To check, use

<</T(c1)/V(Yes)>>

To turn off, use

<</T(c1)/V(Off)>>

I found the answer on this page: http://www.4dcodeexchange.net/fdfformbuilder.htm

Excerpt

Checkboxes come in 2 flavors grouped and individual. Individual checkboxes will usually have a value of "Yes" or "Off". Grouped checkboxes are different in that each checkbox will have its own value. If you have problems with your FDF, look here first.