Application Level Function for Conditional Display

I need to hide a field on Print Preview if it is null. I currently have the following PL/SQL Expression Condition:
:P305_DEPT IS NOT NULL AND v('PRINTER_FRIENDLY') <> 'YES'
It works great; now I need to do this for a lot more fields within my application. Is there a way to call a PL/SQL process defined in HTML DB, passing it the current item value, or some other way to save myself some typing?
I've tried various combinations of shortcuts, substitution strings, application processes, etc. and can't seem to get the right combination.
I'm hoping you have a cool solution, or some other ideas I can try out.
Thanks!
Chaunaci

Hi Raj,
All of this came up because we have several data items displayed above each report page, which allow the user to enter filter criteria. When the page is displayed in Print Friendly mode, the Select Lists display as blanks when null, but Text Boxes display as [] when null.
Our QAs have asked us to make all of the filter fields consistent in appearance in Print Friendly mode. The work-around solution is to hide the filter fields that are null when in Print Friendly mode. Therefore, we came up with the following PL/SQL Expression to use in the Conditional Display:
:P305_DEPT IS NOT NULL AND v('PRINTER_FRIENDLY') <> 'YES'
Because I will need to add the above conditional statement to many items, I was hoping to create and call an HTML DB application-level process and pass the current item value in, so my conditional display logic would look something like...
HIDE_NULL_ON_PRINT(:P305_DEPT).
When I was doing some additional testing last night, I realized my boolean logic needed to be tweaked, and it would be nice to tweak it in just one place, rather than on every field's conditional display.
I currently have it working by putting the IS NOT NULL AND v('PRINTER_FRIENDLY') <> 'YES' into an application substitution string, so my conditional logic shows as:
:P305_DEPT &HIDE_NULL_FOR_PRINT.
In trying to determine if this was the best solution, I need answers to the following issues:
1. Is there a way to generically reference the current item in the conditional display logic? I currently type in the specific item name (ex: :P305_DEPT), but it would be nice if instead I could just say &CURRENT_ITEM_NAME. (or something similar).
2. Can I create an application-level process, pass a parameter into it (the current item), and have it return a value that can be evaluated by my conditional logic display?
Thanks so much for your quick responses to this and all my previous posts. It is wonderful to be able to post a problem at the end of the day, and come in to a solution in the morning!
Chaunaci

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