I am using power query m language. I have created a blank query & written this code

```
let
    Source =  #table(                
                {"first", "second"},
                {
                    {Table.ExpandRecordColumn(Table.FromRecords({[order_id = "a_01", place = "america", price = 700]}), "first", {"order_id", "place", "price"}), "dd"}
                }
              )
in
    Source

```

Actually I am trying to create a table with code & immediately trying to expand it within first column. But it's showing following error
Expression.Error: The column 'first' of the table wasn't found.
Details:
 first

I cannot figure out the problem. Please help me.