Eco mode stopped working from custom modifications with newer update

[AlePerla]

This is not really an issue, more a request about changes.

I had forked this repo from a2e04b4 (very old, I know), because the Eco mode was not working with my device (a climate controller).

The issue in that case, was because the Eco mode was sending a True-False, converted as strings, while the device was working on "true" and "false".
The change I did, was to add a configuration parameter to set a custom conversion for these values (i.e. the verification against the string, instead of working directly with a boolean) and to force the addition of "PRESET_NONE" as preset, because for some reasons, it was not listed in the forntend as possible selection.

You can find these addition in here AlePerla@6fd612b

I tried to replicate the same modification in your current version, I correctly have the PRESET_NONE showing up now (it was not showing before) but haven't been able to make it work, with or without the string conversion.
I noticed that the config flow now has changed, allowing to set a custom DP and value for presets but none of these worked for me (I thought it was DP=5 also before, so first thing I tried is to only set its value to "true" instead of True). I tried all the other possible DPs listed in the dropdown, with no success.
I also tried to re-include the conversion I implemented, with no success.

Is there, for your knowledge, anything else that changed? Maybe the DP was different at that moment?