We cannot convert the value #date to type Function

Hi ahmadov_10 ,

You are missing "each" in this step, and it will throw an error "We cannot convert the value #date to type Function".

#"Addedend" = Table.AddColumn(#"Addedstart", "EndDate", EndDate)

Please try the following code.

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclSK1YlWcgKTzmDSRSk2FgA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column1 = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", type text}}),
    StartDate = Date.AddMonths(Date.StartOfMonth(DateTime.Date(DateTime.FixedLocalNow())), -13), // 01/06/2021
    EndDate = Date.AddMonths(Date.EndOfMonth(DateTime.Date(DateTime.FixedLocalNow())), -1), // 30/06/2022
    #"Addedstart" = Table.AddColumn(#"Changed Type", "StartDate", each Date.ToText(StartDate)),
    #"Addedend" = Table.AddColumn(#"Addedstart", "EndDate", each EndDate)
in
    #"Addedend"

If the problem is still not resolved, please provide detailed error information or the expected result you expect. Let me know immediately, looking forward to your reply.
Best Regards,
Winniz
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