Learn to create a simple button using Left Down and Left Up Stimulus.
Also, click the link above the video for 2 sample dsn files that provide pre-made simple buttons for you to use as a model library.
Both buttons use a Deck with 2 Image objects as the up and down state images, but 1of the 2 sample buttons shows how to add a caption to a button.
https://altia.zendesk.com/attachments/token/wmpzma7bzpfdobm/?name=buttons_altiaSupport.zip