Thanks for your quick reply.
Forgive me as I'm fairly new to this.
My data only has a single row and what I'm trying to do is extract specific fields in that record to feed into a command in my system execute.
Going through your example, I'm not quite sure how I would reference multiple fields from the input. How would I convert the STDIN into parameters, as you mentioned?
Also, when running your graph, the echo statement is not displayed in the console so I can't see that it's referencing the input value during the execution.
Thanks again for your help.