HELP!!! Conditional Formatting on an Access Data Page

I have developed an Access Data Page (access2003) and I need to do conditional formating in a page depending on the scores from the fields in X table. I used the script from this MSDN article,

http://msdn2.microsoft.com/en-us/library/aa139969(office.10).aspx#odc_customizecontrols_cf

It works, BUT when there are Null values, I get a "Type mismatch 'Cint'" error message. I know that this is because it cannot see the Null's as integers (or so I think). The X table has tons of Null values and it is supposed to have them. I have tried everything, researched all over the net, and I cannot find an answer.

Here is my code:

I tried using: If IsNull(bandHTML.children("XValue").Innertext) Then
bandHTML.children("XValue").style.backgroundColor = "#ffffff"

and it does not work, I also used .Value, and NOTHING... I have tried 10 types of combinations to get it to recognize the Nulls and I have not had luck. I am relatively new at this, I would really appreciate your help!

New Guy