Add API result to each row when adding a column using Invoke function

hello

I am trying to Invoke a function that is pulling data from an API. The function takes IDs from the table where I am adding the column.

Here is my function 

let
    Source =(ID_1, ID_2 as text) => let
           Source = each Json.Document(Web.Contents("https://fake.api.com/v3/rest/fake1/" & ID_1 & "/fake2/" & ID_2 & "/fake3?limit=1&offset=0" , [Headers=[Authorization= "Bearer myapikey"]])),
    #"Converted to Table" = Table.FromList(Source, Splitter.SplitByNothing(), null, null, ExtraValues.Error)
    in      
    #"Converted to Table"
in
    Source

the table is like this

I get this error message when invoking the function 

Expression.Error: We cannot convert a value of type Function to type List.
Details:
Value=[Function]

Thanks

Joe
Type=[Type]