Adding a variable to an item of rich text

Hello

Apologies for this very basic question...

I want to display an item of text on each page of my presentation with a mixture of fixed text and a variable. Something like...

"This product is © 1990-2022" where 2022 is the current year and therefore changes automatically.

I can see that I am able to make a script to display this on a user click as follows...

current_year = system.GetDate (6)
Dialog.Message("The product is © 1990-",current_year)

but am missing a trick when it comes to displaying this message at all times on each page.

Any assistance would be appreciated.