Simultaneous profiles?

[IChaneton]

Hi guys!
A few days ago I was wondering if it would be possible to have two profiles turned on at the same time. Knowing it can't be done on the UI, I found out I can do it by changing the "selected" property in karabiner.json.
I've even wrote a little script in python and triggered it with the shell_command property. So now I can press a key and activate both profiles, I can see them on in the drop-down menu, on my OS top bar.
The thing is once I managed to do that, I realized even both profiles are on, just one is actually working, specifically that one on top in the json file.
Is it posiible to have them both working?
It would be great if it was. I could have, for example, diferent profiles for different areas on my keyboard, so I could modify them separetely, without having to repeat code (complex modifications) at every profile I create for an specific area of my keyboard.
Let me know what you think !
Thanks a lot!
Ignacio