I’ve been messing around with Application Studio, trying to learn how to use the components to replicate our old customizations. While doing this I found that the value-set component wasn’t really setting the values I wanted it to, and so I did some testing. I put a dialog-show component on the success and error paths of the value-set component, to see if it was just failing or not. Neither of these dialog boxes showed up, but the one I placed right before the value-set component did.
Can you paste a screenshot of what do the properties for Value-Set look like?
On a side note - we encourage the use of erp-message-handler instead of dialog-show. It is more powerful, and more commonly used in base apps as well for all types of user messaging.