Reload the page.

Please open Lectora help and read about variables there.

My solution is complete. You will just need to assign a variable to the action. You can click the button that appears when you create the action that creates a new variable. Just create one with any name and use it.

Going deeper into Lectora, variables, actions, please see the Lectora User Guide available for free from Trivantis online as well as books on my web site.