Hi,
I need make visible a button only if users role in 'SP Users list' is admin.
This is my list:

Titolo is text column with Last Name and First Name of user, Role is selection type column and Users is email address column.
I have this code on visible property of ADD button but not work:
!IsBlank(LookUp('SP Users list'; User().Email = Users; Role.Value = "Admin"))
Can you help me to find a solution?