Slice not working with LOOKUP, USEREMAIL

[Daniel11]

I have a table REGISTER of action items with an [Owner] column ref to another table call OWNERS
The OWNERS table has the columns [Email], [Name], and [Login]
Since some users are using a Gmail account to Login different than the email on the action item list, I have modified the slice Filter on REGISTER table from: [Owner] = USEREMAIL() to

LOOKUP(USEREMAIL(),“Owners”,“Login”,“Email”) = [_THISROW].[Owner]

But it is not working.

I have also tried [_THISROW].[Owner].[Login] = USEREMAIL() but with no success

Thanks for your help.

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UPDATE: I found the error: I had a security filter on the OWNERS table…