Reference Column Beginning with a Number in Advanced Editor causes Error?

[Anonymous]

I'm trying to add this line via the advanced editor:

#"Max" = Table.AddColumn(#"Removed Columns3", "CustomAA", each List.Max(#"Removed Columns3"[2/28/2019]))

I get an error for "invalid identifier" which references the beggining of the 2/28/2019 column. If I change the column to a column beginning with a letter the line above works. How can I make it work for a column beginning with a letter?

Thanks

[GilbertQ · Accepted solution]

Hi there column names should encapsulate it with a #"Column Name"

#"Max" = Table.AddColumn(#"Removed Columns3", "CustomAA", each List.Max(#"Removed Columns3"[#"2/28/2019"]))