Workarounds to add Submeters for HVAC

edit

I understand from other posts that there is not a direct way to specify an end-use subcategory like you can for internal gains and fans, etc., and that there are workarounds such as EMS or Meter:Custom. But I'm having trouble with the later. In my case I have a building with AHUs and RTUs and I need to split up the energy. I have tried several iterations similar to this:

Meter:Custom,
AHU Cooling Energy,            !- Name
Electricity,                   !- Fuel Type
EL01GroceryAHU01 PSZ-AC 1spd DX AC Clg Coil, !- Key Name
Air System DX Cooling Coil Electricity Energy,  !- Output Variable or Meter Name
EL01GroceryAHU02 PSZ-AC 1spd DX AC Clg Coil,   !- Key Name
Air System DX Cooling Coil Electricity Energy,  !- Output Variable or Meter Name
EL01SalesAHU03 PSZ-AC 1spd DX AC Clg Coil;     !- Key Name
Air System DX Cooling Coil Electricity Energy;  !- Output Variable or Meter Name

And confirmed this variable in the RDD file (and confirmed it's a summed variable, as specified int he documentation:

Output:Variable,*,Air System DX Cooling Coil Electricity Energy,hourly; !- HVAC Sum [J]

and also tried with:

Output:Variable,*,Cooling Coil Electricity Energy,hourly; !- HVAC Sum [J]

and a few others. In all cases I get this error (or similar):

   ** Severe  ** Line: 79650 Index: 35 - "Cooling Coil Electricity Energy" is not a valid Object Type.

Any suggestions?