Execution order: Business Rule vs. Dynamic Member Formula

Hi,
I have a problem with a calc rule that calculate percentage of a list of account in comparison with other account (Ce10) as below
FIX (list of account restricted here, @IDescendants(YearTotal),....)
"Percentage"
(IF (@ISUDA(Account,"Ce10"))
"Percentage" = "NA CE"/"NA CE"->"CE10"; //Here the percentage member and "NA CE" member in the same dimension
ENDIF)
ENDFIX
When I run the rule, the result is ok with the Months. But in the Quater and YearTotal, it's automatically aggregate to a wrong result as the YearTotal is dynamic calc (e.g: Jan: 10%; Feb: 10%; Mar: 10% => Q1: 30%). So I thought it because the Rule is executed first (Q1=10%) but after that, the dynamic aggregation of Year is executed so Q1 is aggregated as 30%.
So how to fix Q1 = 10% as expected result. I did study on two pass calculation but it seem can not apply on this isssue. I searched for "back calculation" also but I still didn't find any solution for this.
Please help me on this.
Thanks.

Thanks JM for quick responding. The problem here is "Percentage" is not a account's member.
To make the question more clearly, I'll explain the rule:
There's a list of account A: A1, A2,...,An
and a list of account B: Ce10, Ce20, ..., Ce90
There is a mapping n-1 between these two lists. For example, A1, A2 is mapped to Ce10, A3 to A5 is mapped to Ce20 and so on. I do it by assigning UDA (e.g: A1 {Ce10}, A2 {Ce10}...)
And the rule is used to calculate percentage of accounts of list A in comparison with equivalent account in list B. So the percentage can not be account member. It's the reason why I can not use member formula and two pass calc here.
Regards,
Huy Van
Edited by: Huyvtq on Jan 9, 2013 9:50 PM

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Version 11.1.1.3
I hope the question is clear. Thanks in advance for your help.
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Edited by: 973421 on Nov 27, 2012 3:38 AM

Hmm, well one way you might do this is to a YTD hierarchy (I know you are doing movements, but sometimes balances are nice, too, and this approach lets you TB whatever with the values and get the right YTD value) in my Months/Time Period/whatever dimension.
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Months
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|___Q1 +
|____Jan +
|____Feb +
|____Mar +
etc.
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YTD ~ Label ONly
|_Jan YTD ~
|__Jan +
|_Feb YTD ~
|__Jan YTD +
|__Feb +
|_Mar YTD ~
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|__Mar +
etc.
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What I think you need is the @CURRMBRRANGE formula:
http://docs.oracle.com/cd/E17236_01/epm.1112/esb_tech_ref/currmbrrange.html
NB -- This is a guestimate on your code, but how about this:
"AC345" = @SUMRANGE("AC123", @CURRMBRRANGE("Months", LEV, 0, , 0)) ;
The startOffset value is null -- that should give you Jan. The endOffset is 0, that should give you whatever the current Month is. I think that's it. I would likely make this member a dynamic calc but that's up to you.
Regards,
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