Controlling years on source table date

[Justas4478]

Hi I have this Query:
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjbQNzDWNzIwNFWKjQUA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Start Date" = _t]),

#"Changed Type" = Table.TransformColumnTypes(Source,{{"Start Date", type date}}),

Custom1 = Table.AddColumn(#"Changed Type", "Second Column", each Date.AddYears([Start Date],1))

I am trying to incorporate this part "Date.AddYears([Start Date],1)" from 'Custom1' query in to 'Source' query.
However I don't really really know M language so I cant tell well what is happening in 'Source' query.
Anyone know how to do these changes or they cant be done at this step of the query?

Thanks

[Anonymous]

Try:

Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjbQNzDWNzIwNFWKjQUA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Start Date" = #"custom1"[Second Column]),

--Nate

[Justas4478]

Hi, @Anonymous I am getting cycle reference error.

Sorry for misunderstanding instead of trying to incorporate column what I needed was only Date.AddYears function.