Ending Inventory / Balnce using @Prior

Question

On 9.3.1 and my time dimension spans two dimensions (Periods and years).
Measures in outline:
Inventory (LabelOnly)
----OpeningInventory (store)
----Additions (store)
----Sales (store)
----EndingInventory (store)
Years (labelOnly)
----2010
----2011
----2012 (is &year1)
----2013 (is &year2)
CalcScript :
Fix(forecast,working,&year1,&year2,@relative(entity,0),@relative(products,0))
SET CREATENONMISSINGBLK ON;
/* LOOP(12) */
OpeningInventory
     IF(@ISMBR(&Year2) and @ISMBR(Jan))
          OpeningInventory= &Year1->Dec->EndingInventory;     /* basically @MDshift */
     IF(NOT @ISMBR(Jan))
          OpeningInventory=@PRIOR(EndingInventory);
     ENDIF;
     EndingInventory=OpeningInventory+Additions-Sales;
/* ENDLOOP */
SET CREATENONMISSINGBLK OFF;
EndFix
Sometimes, (without using LOOP as comented above), the value of the EndingInventory of the previous month is not available when OpeningInventory is calculated
Am I missing some thing?
And also is &Year1 calculated before &Year2 (as per the member oder in outline), so that Year1's December EndingInventory is available while calculating Year2's January OpeningInventory? or do I need LOOP, would like to avoid LOOP as it increases calc time?
Also looked at How to link an opening balance to prior period ending balance?
Appreciate your help.
Thanks

Answer 1

Hi,
We had similar situation and changed the script as below. Added Ending Inventory equation in both if and Else statments also.
Though it is not required, this way, it worked perfect.
IF(@ISMBR(&Year2) and @ISMBR(Jan))
OpeningInventory= &Year1->Dec->EndingInventory; /* basically @MDshift */
EndingInventory=OpeningInventory+Additions-Sales;
IF(NOT @ISMBR(Jan))
OpeningInventory=@PRIOR(EndingInventory);
EndingInventory=OpeningInventory+Additions-Sales;
ENDIF;
Edited by: PadmajaV on Aug 27, 2011 2:29 AM