Issue with Proportional Spreading Script. Please help !

Question

Hello,
I have a requirement where I need to write a spreading script for a data form. On this form user will enter data at a parent level and what the script needs to do is spread the parent level input value to the 0 level members proportinally based on the values already existing in the 0 level members.
Say the account member is “X”. All the other members on the data form in the POV/Page/Rows and Columns are 0 level members except for one that is Product which is in the Page
Product
- A
- B
I came up with this basic logic for the proportinal spread. Ofcourse I will need to include some logic with IF statement or something else to check if the cell belongs to product A or product B. For now, assuming the value is being input for A so now we need to spread that value at A to 0 level members proportionally.
“X” = ((“X” -> (@CURRMBR(“Product”)*100)/(Previous Parent Value *100))*”X”->”A”
Example with numbers:
Current member cell value = 100 (0 level member for Product A)
Previous Parent Value = 200 (Value for A)
New Parent Value = 400 (User inputs this new value by overwriting the previous value 200)
So, X = ((100*100)/(200*100))*400 = 200
Now, the logic of the formula makes sense to me and would spread proportionally, but my question is how would we get the “Previous Parent Value to calculate the % as the user will overrite it with a new value = 400 before running the rule. So, we would not have 200 anymore and unless we have it we wont be able to know the % to do a proportional spread.
I apologize if this is confusing, but please help me with your ideas on how can I achieve this proportional spreading script. I would really appreciate your inputs.
Thanks!
~ Adella

Answer 1

Hi,
Have you not asked this earlier?
Business Rule - Allocation Script Logic - Not working ! Please help.
But in hindsight, I think there's a little problem with the script I had posted. This was what I suggested:
SET UPDATECALC ON;
FIX(“AccountMember”,”FY11”,”EntityMember”,”Local”,”Working”,”BU”,@LEVMBRS(“Product A”,0),@LEVMBRS(“Product B”,0),”Current”,@LEVMBRS(“Dept”,0),LEVMBRS(“Customer”,0))
&Currmonth
&Currmonth = @PARENT(Product)*(&Currmonth/@SUMRANGE(&Currmonth,@RELATIVE(@PARENT(@Currmbr(Product)),0)));
ENDFIX;The problem I see here, every time the script calculates a product, the total of the siblings of the product changes and when it calculates the next product, allocation is done based on a different different total. To overcome this, you can try it this way:
SET UPDATECALC ON;
FIX(”FY11”,”EntityMember”,”Local”,”Working”,”BU”,@LEVMBRS(“Product A”,0),@LEVMBRS(“Product B”,0),”Current”,@LEVMBRS(“Dept”,0),LEVMBRS(“Customer”,0))
&currmonth(
@calcmode(bottomup);
/*copy original values to somewhere else to make sure allocation base doesn't change*/
"AccountMemberAllocBase"="AccountMember";
Endfix
FIX("AccountMember",”FY11”,”EntityMember”,”Local”,”Working”,”BU”,@LEVMBRS(“Product A”,0),@LEVMBRS(“Product B”,0),”Current”,@LEVMBRS(“Dept”,0),LEVMBRS(“Customer”,0))
&Currmonth
@calcmode(bottomup);
&Currmonth = @PARENT(Product)*(&Currmonth->"AccountMemberAllocBase"/@SUMRANGE(&Currmonth->"AccountMemberAllocBase",@RELATIVE(@PARENT(@Currmbr(Product)),0)));
ENDFIX;
Cheers,
Alp