Modifying "Rating" in Calibre 3.7

Hi All,

I have just recently migrated to the latest version of Calibre and it seems that
i cannot modify the actual value of the field "rating" through the bulk edit GUI (search+replace).
I've tried values 0-1-2-3-... to be set to 0, wildcards ... but I don't seem to be setting it correctly in order for the rating values to be set to "0".

Could anyone please give me some hints/solution?

Thanks a lot in advance
Cheers,
gohlensc

P.S. and I've searched the web, without success :o

:thanks: