Bug-error: 17,5ºc versus 17.5ºc?

Sorry for the previous topic that I think was not the true problem

This fact here under seems to be true

When selecting a threshold value condition (in a rule) for room temperature using decimal values (,{number} / .{number}), application do not let me write, as example, 17,5 ºC. Instead I have to write 17.5ºC. However after clicking the OK key, this number appears as 17,5ºC. If I display it again in the selection view, the number appears as 17,5ºC and there it appears also an error/warning message telling that number is not well written. I guess there is a conversion error at this point of the mobile app.
Maybe it is related with some no switching events I’m trying to solve with my home rules
As a workaround I’m going to try working without decimal values