Select_list_from_lov_xl and nulls

I am creating a column on a report which will have an lov using the code below:-
apex_item.select_list_from_lov_xl(p_idx,
p_value,
'ARL LOV',
l_attributes,
'YES',
'%null%',
'Please Select',
NVL(p_item_id,item_id(p_idx,p_rownum)));
The problem I have is that for exisiting records where the value of the column (that the lov is for) is null it is not translating the null into the text 'Please Select'. The text is displayed in the lov when you click on the list but it should be displayed as default, as it is for page items that use the same lov.
Has anyone else seen this happening and do you know how I can get around it?
Andy.

Thanks Daniel for your reply.
I tried what you suggested, my lov query is
Select 'Please Select' show, null value
from dual
union all
SELECT arle_description||' - '||arle_code show , arle_code value
FROM assessment_risk_levels
WHERE arle_current_ind = 'Y'
ORDER BY 1
I called select_list_from_lov_xl with p_show_null = 'NO'
However I still cannot get 'Please Select' displayed automatically for rows where the value is null. A blank is displayed and 'Please Select' is displayed at the top of the LOV.
Any other ideas?

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Edited by: Enyix on 26/02/2012 11:22 PM

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corlettk wrote:
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Reg: concept of COUNT and NULLs -

Hi Experts,
I have a simple conceptual doubt regarding COUNT and NULLs.
Even I have experimented and can justify the behaviour, just need to confirm once with guru's and experts over here.
Workout:
CREATE TABLE test_x1
AS
SELECT 1 col1, 'a' col2, 'a1' col3 FROM dual UNION ALL
SELECT 2 col1, 'a' col2, 'a1' col3 FROM dual UNION ALL
SELECT 3 col1, 'a' col2, 'a1' col3 FROM dual UNION ALL
SELECT 4 col1, 'a' col2, 'a1' col3 FROM dual UNION ALL
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SELECT NULL col1, NULL col2, NULL col3 FROM dual UNION ALL
SELECT 8 col1, 'a' col2, NULL col3 FROM dual;
SELECT
Count(*),
Count(col1),
Count(col2),
Count(col3)
FROM test_x1;
COUNT(*) COUNT(COL1) COUNT(COL2) COUNT(COL3)
8 7 7 5
My justification:
COUNT(*) - It counts for physical *rowid* ,and doesn't bother to check if data in the columns is it NULL or anything else.
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Is the above correct? Please advise me on this.
-- Ranit

it's documented: http://docs.oracle.com/cd/E11882_01/server.112/e41084/functions039.htm#SQLRF00624
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Oracle 10g R2
I performed validity test using VALIDATE_LAYER_WITH_CONTEXT as follow:
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Select_list_from_lov_xl and nulls

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