I have a form with a table used to fill out information for different payment options. There are several check boxes and then a few fields which I have put into a subform associated with the check boxes. The code I have to control the presence is:
topmostSubform.Page1.CheckBox1::change - (JavaScript, client)
if (CheckBox1.rawValue == 1) {
sub1.presence = "visible";
}else if (CheckBox1.rawValue == 0) {
sub1.presence = "hidden";
}