Broadlink binding for RMx, A1, SPx and MP. Any interest?

Hi everybody. I’m trying to use this binding with OpenHAB 2.4 on a raspberry pi v3 with Stretch (apt-get installed) because I’m slowly migrating from a working OpenHAB 1.8.3 installation.
In my still working 1.8.3 I’m using probably an old version of the broadlink python library that worked well for my broadlink A1 sensor and for my 2 RM mini3 remotes. I was using an early version of BroadlinkControl.py (following indication in this thread by @davorf ) which I also used to record IR codes in a file. Such a program was also mentioned in this thread by someone else.

In my new OpenHAB installation I would like to simplify and therefore this binding is of great help.
I am able to read temperatures for the A1 (which was discovered after some time) and I discovered the two RM3 mini. I created the map file but when I tried to issue a command I always get the following error

2018-12-23 11:47:06.857 [ERROR] [.handler.AbstractLoggingThingHandler] - broadlink:rm3:b4-43-0d-dc-8b-ed[^]: Will not send remote code because it has an incorrect length (212)

The things are defined in paper UI, while items, sitemap and mapping files are configured as text files.

Suspecting that the IR codes by my old broadlink version were incorrect, I also tried to copy IR codes from other threads. I was expecting that the binding would have sent it anyway, but I always get the same error: only the length in parenthesis changes.
I’m not a java programmer so I cannot delve into the binding sources to try to figure out what this error means.
Can someone suggest me how can I further debug this issue?
Thank you,
Lionello