Property for doors

[mija]

Properties and expressions for me are a mystery, so I was hoping someone more skilled can help me achieve what I need.

So in my doors/window schedule I want to show home many left and right doors are per floor. So in the schedule it would show something like this:

Ground floor : L (9) , R (8)

I floor ... etc

I believe this could only be achieved with properties but if there is a workaround please suggest. Also if you have some suggestions for learning expressions I would like to see some.

[Miha Nahtigal]

You dont need properties for that. 
Include a home story and opening direction in your schedule. Group by home story (set a flag) in fields list. 
Than (after schedule lists all doors, with different opening direction in rows) use a merge feature of schedule to display opening direction in single field. 

https://help.Graphisoft.com/AC/25/INT/_AC25_Help/050_ViewsVB/050_ViewsVB-99.htm

[Laszlo Nagy]

There is a short clip about Archicad 25 that specifically shows how to do this:

https://youtu.be/GT1KPLNxzt0?list=PLnXY6vLUwlWV-e-abKD1aOfZ958bwemZ4