You set a story variable named player to a value of "Jane Doe" like so
<% s.player = "Jane Doe"; %>
You output the current value of the player story variable like so
Hi, my name is <%= s.player %>
warning: The Snowman story format assumes that it's users are either experenced web-developers or are willing to learn how to become one. It requires knowledge of HTML, CSS, and JavaScript to use it..