Sorry Dave,
I was thinking about the automatic dimensioning in plan.
Don't know how I missed the scheduling side of things.
Here is a link to an old post about getting the auto dimensions for doors/windows in schecdules.
http://archicad-talk.graphisoft.com/viewtopic.php?t=30408
The hotspots need to be positioned based on certain parameter values.
Most of these are specific for doors and windows but some might be able to be used in other objects.
Maybe you could used hotspots based on parametrs such as "ac_unit_width", "ac_unit_height"?
I couldn't say for sure without experimenting.
Hopefully that link may shed some light on the subject and maybe will help you to head in the right direction if it is possible and sorry I may have mislead you in the first place.
Barry.
One of the forum moderators.
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