Data Flow Source That Will Take A String Variable With Csv Structure?

I am able to use a custom script task to receive a MSMQ package and save the package contents to a flat file.

I can also use the bulk load task to push the flat file contents into a SQL table.

However, I would like to save the package contents to a variable (done, it works), and then pass that string variable to a data flow task for SQL upload. In other words, I don't see any reason to persist the msmq package contents to disk.

My question is: Which data flow source can I use that will accept a string variable? The string variable will then need to be processed with bulk load or an execute sql task.

Btw, the content of the string variable is a csv style string:

"01001","11/21/2006",15
"01001","11/21/2006",1
"01001","11/21/2006",25
"01001","11/21/2006",3


Thanks,

Trey