LotusScript equivalents for the @Contains(@UserRoles;"ADMIN")

Function IsInRole (RoleName As String) As Integer
IsInRole = False
Dim userRoles As Variant
userRoles = Evaluate("@UserRoles")
Forall role In userRoles
If Ucase(role) = Ucase(RoleName) Then
IsInRole = True
Exit Forall
End If
End Forall
End Function