Can @Prior or something similiar be used in a fix statement in this way?

Question

Hi,
I have a substitution variable 'currmonth' set to 'may'. In my calc on my fix I use: Fix (jan:&currmonth), but then I need to fix on 'currmonth' minus 1 month so 'apr' like Fix (jan:apr). However each month the 'apr' part will increase by one as 'currmonth' increases by one month. Thus I can't hardcode in 'apr'. So when I run next month and 'currmonth' = 'jun' it will run my second fix for 'may'.
&CurrMonth = May
Fix(Jan:&CurrMonth) - Works Correctly
I can't get this to work:
Fix(Jan:@Prior(&CurrMonth))
Anyone know a way to resolve this without having to go create a bunch more sub vars?
Thanks

Answer 1

I did this with subvars:
Fix ( @Levmbrs("Small Pwr Prd-NW.CO",0), "Current Forecast", "Working") /* Main Fix */
/* Declare local variables and reset to zero. Will be re-used throughout calc */
var Cumulative_Amount =0;
var Average_Amount =0;
/* Calculate the previous 24 months average for the desired account/location combinations */
Fix ("Small Renewable Energy Expense")
"Value" (
IF (@ISMBR(&CurrentYear) AND @ISMBR(&CurrYrStartMonth))
/* Set the local variables to store the correct values for previous 24 months */
Cumulative_Amount = @Sumrange("Small Renewable Energy Expense"->"Actual"->"Final" ,@XRANGE(&PriorYear1->&CurrYrStartMonth, &PriorYear1->Dec)) +
@Sumrange("Small Renewable Energy Expense"->"Actual"->"Final" ,@XRANGE(&PriorYear->Jan, &PriorYear->Dec)) +
@Sumrange("Small Renewable Energy Expense"->"Actual"->"Final" ,@XRANGE(&CurrentYear->Jan, &CurrentYear->&PriorMo));
Average_Amount = Cumulative_Amount / 24;
/* In the Current Month and Year set the value equal to the Average_Amount local variable */
"Small Renewable Energy Expense" = Average_Amount;
/* Now for the Current Year and the Next Month to end of year, set the value equal to the Average_Amount local variable */
ELSEIF (@ISMBR(&CurrentYear) AND @ISMBR(&CurrYrNextMonth:Dec))
"Small Renewable Energy Expense" = Average_Amount;
/* For the full next year, set the value equal to the Average_Amount local variable */
ELSEIF (@ISMBR(&NextYear) AND @ISMBR(Jan:Dec))
"Small Renewable Energy Expense" = Average_Amount;
/* Now for the last year, set the value equal to the Average_Amount local variable */
ELSEIF (@ISMBR(&NextYear1) AND @ISMBR(Jan:&NextYr1EndMonth))
"Small Renewable Energy Expense" = Average_Amount;
ENDIF )
Endfix
Fix ("Small Renewable Energy")
"Value" (
IF (@ISMBR(&CurrentYear) AND @ISMBR(&CurrYrStartMonth))
/* Set the local variables to store the correct values for previous 24 months */
Cumulative_Amount = @Sumrange("Small Renewable Energy"->"Actual"->"Final" ,@XRANGE(&PriorYear1->&CurrYrStartMonth, &PriorYear1->Dec)) +
@Sumrange("Small Renewable Energy"->"Actual"->"Final" ,@XRANGE(&PriorYear->Jan, &PriorYear->Dec)) +
@Sumrange("Small Renewable Energy"->"Actual"->"Final" ,@XRANGE(&CurrentYear->Jan, &CurrentYear->&PriorMo));
Average_Amount = Cumulative_Amount / 24;
/* In the Current Month and Year set the value equal to the Average_Amount local variable */
"Small Renewable Energy" = Average_Amount;
/* Now for the Current Year and the Next Month to end of year, set the value equal to the Average_Amount local variable */
ELSEIF (@ISMBR(&CurrentYear) AND @ISMBR(&CurrYrNextMonth:Dec))
"Small Renewable Energy" = Average_Amount;
/* For the full next year, set the value equal to the Average_Amount local variable */
ELSEIF (@ISMBR(&NextYear) AND @ISMBR(Jan:Dec))
"Small Renewable Energy" = Average_Amount;
/* Now for the last year, set the value equal to the Average_Amount local variable */
ELSEIF (@ISMBR(&NextYear1) AND @ISMBR(Jan:&NextYr1EndMonth))
"Small Renewable Energy" = Average_Amount;
ENDIF )
Endfix
Endfix /* End Main Fix */