I created a Custom Label Name: SaveAndContinue, Value: Save and Continue
I am attempting to use {!$Label.SaveAndContinue} as the custom label for Next or Finish. Upon saving, I get this warning
"The Next or Finish label contains one or more merge fields, which aren't supported."
In the case where a flow has 40 screens and "Next" is the value entered for the button and your boss wants it to say "Forward", it would be so much more convenient to change ONE Custom Label than changing FORTY Nexts to Forward.
I totally agree with Michael. Additional downside of the solution using Translation Workbench is, that you have to modify/deploy Translations for those buttons with every new flow version.
It does not stick to the flow but to the version.
So even without changing the Screens you'll have to make sure to adjust the translations after a change - that is prone to errors.
The link to Michaels Idea for reference:
https://ideas.salesforce.com/s/idea/a0B8W00000Qe7oMUAR/allow-actual-custom-labels-to-be-uses-to-customize-the-next-or-finish-buttons
