Use the type command to simulate typing text into the input field on the right.
Open the Herbie extension and type the following commands in Herbie Tab:
By ID:
type "Hello, World!" in '#text-input'
By Class:
type "Hello, World!" in '.input-class'
By XPath:
type "Hello, World!" in "//input[@name='textinput']"
This will insert the text "Hello, World!" into the input field.