Apply rule table of multiple string conditions to Data table (issues with List.Contains)

let
    seq_no = List.Buffer(conditions[Sequence No]),
    cond = List.Buffer(List.Transform(conditions[Condition], (x) => Expression.Evaluate("each " & x, #shared))),
    cond_column = Table.AddColumn(
        data, 
        "cond",
        (x) => List.Transform(
            List.PositionOf(
                List.Transform(
                    cond, 
                    (w) => w(x)
                ), 
                true,
                Occurrence.All
            ), 
            (i) => seq_no{i}
        )
    )
in
    cond_column