Dynamically Modifying The Data Flow Task

In my SSIS package, I have a data flow task
I am loading a CSV file into a SQL table (OLE DB destination)

I have a couple of CSV files to be loaded
Instead of creating a separate task for each file , can I combine them together into a single task

I was thinking about using a ForEach container

This approach works if the number of columns in all the CSV files is same
But in my case it is not

So what I want is a script task that dynamically modifies the mappings

Can I do this?

I was browsing the net and I found certain code which uses IDTSExternalMetadataColumn90, MapOutputColumn etc.
But the code was creating a new package for each mapping

I couldn't understand the code

So can you please help me with this?

My script task should modify the mappings in my data flow task
For e.g.
If I have 3 columns in my CSV and 3 columns in DB, they should be mapped in the same order


P.S. I do not want to use configurations