Hi,
To set the default value for your different contexts.
For example, for the "Dev" context, we set the value as "text1" and the input file stream will input the "text1"data in the tfileinputdelimited. When you change the context"Dev" into"Prod", the input file stream will be consistent with the default value set by "Prod"("text"). You will get two different output result when you under different context enviroment.
Best regards
Sabrina