Hello Thara, you can definitely show a dynamic confirmation message in Mendix multiple ways,
1. Custom Confirmation Page or Popup
Create a page or popup that shows your dynamic message based on passed-in data.
Use a microflow to open this page as a popup, passing the relevant object or message.
Let users confirm or cancel using buttons on that popup, then continue logic based on their choice.
2. Nanoflow with Confirmation Widget
Use community widgets like Confirmation Dialog or Modal Window widgets available on Mendix Marketplace.
These often allow more flexible and styled confirmation dialogs with dynamic content.
3. Toast Messages for Informational Feedback
If you just want to show info or alerts without user confirmation, you can use Toast messages (via widgets or custom nanoflows).
Tips: Instead of the built-in Show message, using a custom popup/page or community confirmation widgets gives you more control and better UI flexibility for dynamic messages.
I hope this one helps you! :)