Use Text.Start function dynamically based on column name

Hey guys,

I'm working on a solution to dynamically applying the Text.Start function.

What I want to achieve is to pass the Level Number of the column name to the function:

= Table.TransformColumns(#"AddColumn",
List.Transform(ColumnNames,
each {_,each Text.Start(_, 3), type text}
))

Do you have any idea on how to get the value out of the column name and pass it to the function?

The expected result should look like this:

Thanks Dan