Creating output file names dynamically for each SQL Server table data stream taken as input from configuration File

I did that and it worked. Just wondering why it will not work if i have one pipeline and use the same parameters. It creates the output in the file but the problem i am seeing it is not able to cretae multiple files based on different input table names and appending everything in opne file. I tried the Append, overwrite options in the file writer snap and did not make it work.