Oracle Forms

Greetings all,

Platform: Oracle 10GR2

We have an issue with a person who is visually disabled, and needs some kind of
identifier to know what the current field item he is at. After digging around the forum
I found some excellent discussions on just how to do it. I tweaked the suggestions and
simply inverted the Fore/Background color of the currently active field. However,
although I can get the code to work on a standalone test form, once I try to pull the
tested code into an in-production test case, it blows its guts up.

Error: FRM-41805. 'Ambiguous Item Name' and 'Cannot find item. Invalid ID' text descriptors.

Code: (triggered at the FORM level in both the PRE/POST-TEXT-ITEM).

    DECLARE
      cItem item;
      cFG  varchar2(30);
      cBG  varchar2(30);
    BEGIN
    	-- Get the block.item ID for the current item
        cItem := Find_Item(:SYSTEM.CURSOR_ITEM);

        -- Save the foreground and background colors
        cFG := get_item_property(cItem,FOREGROUND_COLOR);
        cBG := get_item_property(cItem,BACKGROUND_COLOR);

        -- Reverse the foreground and background colors
        set_item_property(cItem,FOREGROUND_COLOR,cBG);
        set_item_property(cItem,BACKGROUND_COLOR,cFG);
    END;

I'm guessing that the problem is happening because Forms can't tell which 'Item' I'm trying to access. My question is why? By all rights, the FIND_ITEM builtin should be returning the block.item value back in a usable form. So if I'm getting a valid BLOCK.ITEM identifier, why shouldn't it resolve properly to the currently selected 'Item'?

One item of possible note: When the code was developed the developers used the same 'Item Name' across multiple blocks. For example: SEL (a selection field) is used on my test form in 6 blocks, on 5 different canvas. Of course this may make no difference at all.

Appreciate your thoughts on the matter.

Dave