How do I enter the username?

I’m new to using this tool.

I’ve identified two problems: Using Get Element and clicking “Open Selector,” I can identify the object, however, I can’t figure out how to enter the username.

Thank you very much for your help.

Add an Assign activity inside the body of the Get Element. On the left side, type item.value, and on the right side, type "your-user-name".

updated the post, forgot to add " around the text