Unable to overwrite kMDItemLastUsedDate mac os xattr

Question

I would like to overwrite the "kMDItemLastUsedDate" from a mac folder, reading online it does not seem to work with touch so I tried a few things with xattr.

here is when I get the following command (to get metadata info):

$mdls Test2

_kMDItemDisplayNameWithExtensions = "Test2"
kMDItemContentCreationDate = 2022-04-20 12:16:27 +0000
kMDItemContentCreationDate_Ranking = 2022-04-20 00:00:00 +0000
kMDItemContentModificationDate = 2022-04-20 12:16:27 +0000
kMDItemContentModificationDate_Ranking = 2022-04-20 00:00:00 +0000
kMDItemContentType = "public.folder"
kMDItemContentTypeTree = (
"public.folder",
"public.directory",
"public.item"
) kMDItemDateAdded = 2022-04-20 12:16:27 +0000
kMDItemDateAdded_Ranking = 2022-04-20 00:00:00 +0000
kMDItemDisplayName = "Test2"
kMDItemDocumentIdentifier = 0
kMDItemFSContentChangeDate = 2022-04-20 12:16:27 +0000
kMDItemFSCreationDate = 2022-04-20 12:16:27 +0000
kMDItemFSCreatorCode = ""
kMDItemFSFinderFlags = 0
kMDItemFSHasCustomIcon = (null)
kMDItemFSInvisible = 0
kMDItemFSIsExtensionHidden = 0
kMDItemFSIsStationery = (null)
kMDItemFSLabel = 0
kMDItemFSName = "Test2"
kMDItemFSNodeCount = 0
kMDItemFSOwnerGroupID = 20
kMDItemFSOwnerUserID = 501
kMDItemFSSize = (null)
kMDItemFSTypeCode = ""
kMDItemInterestingDate_Ranking = 2022-04-20 00:00:00 +0000
kMDItemKind = "Folder"
kMDItemLastUsedDate = 2022-04-20 12:24:52 +0000
>>kMDItemLastUsedDate_Ranking = 2022-04-20 00:00:00 +0000
kMDItemUseCount = 1
kMDItemUsedDates = (
"2022-04-19 22:00:00 +0000"
)

Then I if I run:

$xattr -w "com.apple.metadata:kMDItemLastUsedDate" "2022-03-10 12:16:27 +0000" Test2 Then I get:

$xattr -l Test2

com.apple.metadata:kMDItemLastUsedDate: 2022-03-10 12:16:27 +0000

This metadata seem not to have changed neither in the finder nor in the mdls

$mdls Test2

_kMDItemDisplayNameWithExtensions = "Test2"
kMDItemContentCreationDate = 2022-04-20 12:16:27 +0000
kMDItemContentCreationDate_Ranking = 2022-04-20 00:00:00 +0000
kMDItemContentModificationDate = 2022-04-20 12:16:27 +0000
kMDItemContentModificationDate_Ranking = 2022-04-20 00:00:00 +0000
kMDItemContentType = "public.folder"
kMDItemContentTypeTree = (
"public.folder",
"public.directory",
"public.item"
)
kMDItemDateAdded = 2022-04-20 12:16:27 +0000
kMDItemDateAdded_Ranking = 2022-04-20 00:00:00 +0000
kMDItemDisplayName = "Test2"
kMDItemDocumentIdentifier = 0
kMDItemFSContentChangeDate = 2022-04-20 12:16:27 +0000
kMDItemFSCreationDate = 2022-04-20 12:16:27 +0000
kMDItemFSCreatorCode = ""
kMDItemFSFinderFlags = 0
kMDItemFSHasCustomIcon = (null)
kMDItemFSInvisible = 0
kMDItemFSIsExtensionHidden = 0
kMDItemFSIsStationery = (null)
kMDItemFSLabel = 0
kMDItemFSName = "Test2"
kMDItemFSNodeCount = 0
kMDItemFSOwnerGroupID = 20
kMDItemFSOwnerUserID = 501
kMDItemFSSize = (null)
kMDItemFSTypeCode = ""
kMDItemInterestingDate_Ranking = 2022-04-20 00:00:00 +0000
kMDItemKind = "Folder"
kMDItemLastUsedDate = 2022-04-20 12:24:52 +0000
kMDItemLastUsedDate_Ranking = 2022-04-20 00:00:00 +0000
kMDItemUseCount = 1
kMDItemUsedDates = (
"2022-04-19 22:00:00 +0000"
)

This is my interrogation number 1.

Then if I try to delete the newly added metadata with:

$xattr -d com.apple.metadata:kMDItemLastUsedDate Test2

The first time it works and disappears when I do xattr -l Test2
But it doesn't work a second-time and doesn't disappear from mdls

xattr: Test2: No such xattr: com.apple.metadata:kMDItemLastUsedDate

-> my conclusion is that the "com.apple.metadata:metadata:kMDItemLastUsedDate" is not the one that I see in mdls, but and extra metadata that I add with xattr -w.

Any idea on how to modify the kMDItemLastUsedDate?

Cheers.