Multiplying data at two different levels

Question

I have Actual Forecast Bias data generated at a particular level (%Bias). I want to multiply this against other data that is at a different level in the same cube so as to adjust the forecast in line with actual performance. The Bias% data is at Battery Part# level. The data that I want to multiply it against is Appliance/Battery level. When I run it, the multiplication operates against a rolled up consumption level for all appliances that use a particular battery. I need the Bias % to operate at the battery level, not the rolled up level..
I'm a newbi at this so any help welcome
See the code below
FIX (Batteries, @IDESCENDANTS ("A Size Family"),appliances,ww,@idescendants(NA));
"New forecast %" = #Missing;
"Bias %" = #Missing;
"Bias %" = ("trade units" -> Actual/"trade units");
ENDFIX;
FIX("wif 1")
FIX (@LEVMBRS(appliances,1),@levmbrs(Batteries,0), @IDESCENDANTS ("A Size Family"),ww,@idescendants(NA));
"New forecast %" = consumption*"Bias %";
ENDFIX;
ENDFIX;
FIX("wif 1")
CALC DIM (WW, Supplies, Printers);
ENDFIX;

Answer 1

Hi Johnnie
I assume the important bit is the bit within the second fix:
"New Forecast" = Consumption * "Bias %";
The way you have your fix statement set up it is looking at level 0 members in your Appliances and Batteries dimensions (I'm reading your post as if they are separate dimensions). I assume your issue is that the one piece of data is at level 0 interesections of appliances and batteries but the other piece is not possibly at level 0 of one dimension and level 1 or higher of the other, Bias% being the one at the higher level?
If that is the case then I think you need to look at a way of getting from the level 0 member to the correct intersection point(s).
Have you had a look through the technical reference at functions like @PARENTVAL, @ANCESTVAL or the multidimensional options for the same @MDPARENTVAL and @MDANCESTVAL, it sounds like your formula needs to be something along the following lines
"New Forecast" = Consumption * @PARENTVAL(Appliances, "Bias%");
What the above would do differently to your original code would be to get the Bias % value from the parent of the current level 0 member of the appliance dimension being calculated. While this might not be exactly what your requirement is hopefully it will steer you in the right direction.
Hope this helps
Stuart