How do i link Microworkers and Qualtrics, and generate VCode?

Hi guys, i am needing some help linking my Qualtrics survey to Microworkers. Needing to generate a random ID. Microworkers uses VCode which i am unfamiliar with. I am not sure how to insert this into my survey flow, so that i would generate a VCode to Microworker standards: https://www.microworkers.com/vcode.php. I am only familiar with adding in the web service element for generating a 5 digit code to link with MTurk. Someone please help!