Max Per Group Power Query - max

Question

I'm using this code for creating a custom column!
max per group
let
Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
#"Changed Type" = Table.TransformColumnTypes(
Source,
{{"Column1", type text}, {"Column2", Int64.Type}}
),
#"Added Custom" = Table.AddColumn(
#"Changed Type",
"maxInt",
each
[
filter = [Column1],
max=Table.Group(
Source, {"Column1"},
{{"MaxFiltered", each List.Max([Column2])}}
){[Column1=filter]}[MaxFiltered]
][max]
) in
#"Added Custom"
It works fine for getting the maxInt new column with the expected values!
But if I go on and try to reapeat the same code for adding another column to look for another maxInt but for another field, it gives me the output for this last column, and the other dissapears.
Can someone give a feedback on this matter?
Here follows my code:
#"Added Custom" = Table.AddColumn(
#"Changed Type",
"maxInt",
each
[
filter = [ID],
max=Table.Group(
Source, {"ID"},
{{"MaxFiltered", each List.Max([TAX])}}
){[BOOKING ID=filter]}[MaxFiltered]
][max]
),
#"Added Custom1" = Table.AddColumn(#"Added Custom", "Custom", each if [maxInt]=[TAX] then 1 else 0),
#"Filtered Rows" = Table.SelectRows(#"Added Custom1", each ([Custom] = 1)),
#"Added Custom2" = Table.AddColumn(
#"Changed Type",
"maxInt2",
each
[
filter = [ID],
max2=Table.Group(
Source, {"ID"},
{{"MaxFiltered2", each List.Max([CODE])}}
){[BOOKING ID=filter]}[MaxFiltered2]
][max2]
)
in
#"Added Custom2"
The Added Custom Column dissapears and it only gives me the Added Custom2.