I see in Foobar a diferent year with month and day 
This text will be hidden: image
I try to set a new column with %releasetime% but is empty.
what is the field? I can set it in the panel in the left?
I see in Foobar a diferent year with month and day 
This text will be hidden: image
I try to set a new column with %releasetime% but is empty.
what is the field? I can set it in the panel in the left?
see the extended tags dialogue (Alt-T).
I suspect that there is a (user-defined) field DATE.
it's strange: its like YEAR_IN_FOOBAR = DATE+YEAR. I delete DATE and I see only 2019
image
can I set the fileld in the left panel?
Have you checked the extended tags dialogue? I don't see it in the screendumps.
The field DATE contains the month and the year as a 6-digit number.
In the extended tags dialogue, you would also see if there are 2 fields: DATE and YEAR.
All other questions about foobar and how it displays tag data would be a topic for the foobar support.
To add a field in the tag panel, use
File>Options>Tag Panel and click the "New" button (or right-click into a grey area of the tag panel and select Adapt ...)
I put the tag Date in the panel 
thank you. 
Please note that the field DATE is a userdefined one. So every player that cannot deal with userdefined fields (which are most players) will not show the time data.
The 2 fields that are standard fields for this are YEAR and RELEASETIME.