Adding lines to existing variable or textArea

Hey there…

I have a loop running on a buttons submit which returns several results in the form of…

Product ID - Product Name

Basically, I want to have a textArea, or a variable textfield and have it update it for each of the products the loop returns…

For instance… the loop runs, and returnes 3 products… I want the final display in the text area to be

Product ID1 - Product Name1
Product ID2 - Product Name2
Product ID3 - Product Name3

Can someone explain to me how I might achieve this?
Thank you.