Learn how to control Widget UI Material Parameters dynamically in Unreal Engine 5 using Blueprint! 
This ultimate step-by-step tutorial, guided by Ashif Ali, a RealtimeVFX artist and YouTuber from India, shows you how to create interactive UI effects that respond to gameplay events. This video is perfect for game developers who want to add dynamic visual feedback to their user interface and create a professional, polished experience.
https://dev.epicgames.com/community/learning/tutorials/aqbo9/unreal-engine-5-the-ultimate-guide-to-widget-ui-material-parameters