Variable in Column Name in Power Query in Drill Down

[soni27]

I have LastColumnName Step in the Power Query

I would like to drill down using LastColumnName

I tried below,  It is not working, please assist

= Custom2{0}[Record.Field(_, LastColumnName)]

[watkinnc]

What does the step LastColumnName = ? Also, when you say "drill down", do you want to return the value from the last column in the first row, or a list of all the values in the last column. Finally, what is the actual column name at this step?

Thanks! -- Nate

[watkinnc]

= Custom2{0}[LastColumnName]

--Nate

[soni27]

It is not working,  I can not able to drill down using variable Name for the column name