Help with creating function

[Hannisky]

I'm trying to create a function that makes changes to tables before expanding. The starting point is as below a column of tables. 

My function at present takes a table and promotes headers. 

It kind of works as intended but not getting the correct result 

Each table in column c2 has another table and the table contained does not have promoted headers. Not sure where my syntax is incorrect. 

Any help would be appreciated.

[BA_Pete · Accepted solution]

Hi @Hannisky ,

It looks like you should be invoking your function in a TransformColumns function, something like this:

Table.TransformColumns(Source, {"c1", each fnHeaders(_)})

Pete

[Hannisky]

Perfect. Thank you