LINKTOFILTEREDVIEW action based on same user but in different columns

[Espegg]

I have two tables:
1. Users (the KEY COLUMN is "CODICE FISCALE")
2. Events (the Associated columns are: "User1" "User2" "User3" "User4" )

I am creating a view based on table "Users" with a LINKTOFILTEREDVIEW action button,
and when I click this button I would find the Users if it is present in one of "User1" "User2" "User3" "User4" columns.

If I try with
LINKTOFILTEREDVIEW("Events Global", [User1] = [_THISROW].[CODICE FISCALE])
it works, but I would include all the other 3 situation.
And so also  "User2" "User3" "User4"

Basically I would like to find the Users in the entire "Events Global" view, regardless if it is present in the columns "User1" "User2" "User3" "User4".

How could I proceed?