Hi,I am a bit confused about the tool you are using to develop the form.
Is it LiveCycle or Acrobat. LiveCycle's JavaScript is bit different than
that of Acrobat's.You can try the following script in LiveCycle in the
check or click event of the check box.var f = checkbox field
name.rawValue ; // Stores the value of the check box, 1 = On, 0 = Off.if
(f == 0) { bufferField.rawValue = "ABC"; }else { bufferField.rawValue =
""; }Thanks,Bibhu.