Referencing the Hidden Attribute

Once you have defined a hidden attribute, you can reference it in other expressions, such as:

<Field name=’secureKey’>
   <Disable><lt><ref>jobGrade</ref><i>10</i></lt></Disable>
     ...
</Field>

You can use XPRESS defvar variables to hold the results of a computation, but the results are typically not as efficient as using a hidden form field.