Lens not automatically selected

I tried the suggestion with the exiv2 file (using the idea fromhttps://github.com/darktable-org/darktable/issues/4951
and added an exiv2.ini file into my homedir in windows with the following content

[nikon]
Tamron SP 70-300mm F4-5.6 Di VC USD=Tamron SP 70-300mm F4.0-5.6 Di VC USD (A005)

but that won’t work. Is there some easy fix? Or is lens correction a bigger problem?

The idea with the preset is working, thanx!