Hidden Required Fields

Even though you are posting in the Acrobat forum, your Product Information says LiveCycle Designer 8. So I am assuming with this reply that you want the answer for use in LiveCycle Designer.

I have not had a chance to test this, but try this added to the script of your checkbox. --

The Syntax to use is:
Reference_Syntax.nullTest = "disabled | error | warning"

Example in JavaScript:
TextField1.validate.nullTest = "error";//throws an error message if the field is empty

TextField1.validate.nullTest = "disabled";// disables the nullTest so it essentially turns of the REQUIRED status.

Here is the script that I got to work on my test form in LiveCycle Designer 8.2:

if (form1.P4.CustomerFields.presence == "hidden") {
form1.P4.CustomerFields.TextField4.validate.nullTest = "disabled";
}
else {
form1.P4.CustomerFields.TextField4.validate.nullTest = "error";
}

Sue,
Where in the script window would I put your code -- under which Show event?

You would put the script on the CHANGE event making sure to have Javascript in the LANGUAGE box and RUN AT: CLIENT

Using my example, here is how to do it:

The entire script to change Subform1 to visible or hidden and also the script to change the REQUIRED test on the TextField4 is all put in the Change event of the CheckBox8 field.

if (CheckBox8.rawValue == true)
{Subform1.presence = "visible"
}
else
{Subform1.presence = "hidden" }

if (Subform1.presence == "hidden") {
TextField4.validate.nullTest = "disabled";
}
else {
TextField4.validate.nullTest = "error";
}