I want a user to input a small amount of text to use within a query in my process, assigning that text to an input field. Is there any way to do this in Informatica?

I have tried using a POST call in Postman with my text in the body of the call, but I seem to be having separate issues with that. Regardless, using a REST client isn't a super great solution for what I want to do with my process.

Also, I'm v new to Informatica, so please go easy on me. I wasn't able to find anything like this, and I'm not entirely sure this is a thing Informatica can do.