Message sequentially rather than a list

Never mind, i had bangs in the wrong place... time tostop.

OK I am sure this is obvious, but my painkillers and such seem to be making me stupid. I am looking to get output from a zl unique object into a umenu. out of the zl unique, I can set the message poem1.txt poem2.txt poem3.txt etc. I need commas between them, or to fed them sequentially into the umenu with a prepend append object. I have tried regex but substituting for the white spaces with \, gets me an s, , gets me exactly that, and "," goes to a in the regex box. I can't for the life of me figure out how to substitute commas for white spaces. Ok so I try zl iter 1. That gets me poem1, poem1, poem2, poem1, poem2, poem3 on individual lines in the umenu.

How do I get commas between my entire or get them to be sequential so I can have each as its own entry in the umneu?

Thanks