Help with creating a click-through animatic with dialogue using blueprints

Hi to all! So I am working on a project where I am aiming to explain the plot of a character through an animatic. Through this wonderful tutorial by Unreal University (https://youtu.be/Z8q1eMU2Gjo?si=lh9IX4E_JkXGEHne) I had gotten the basics down. Using a data table; I set up the dialogue, character name, and still images of the animatic. However, through endless trial and error I couldn’t figure out how to change the 2D Texture of the widget brush to videos in order to make a proper animatic. You’ll see in the code that I have tried some things and could never get it working. Any help on how I could go about this would be appreciated!

r/UnrealEngine5 - Level Blueprint|750xauto

Level Blueprint

r/UnrealEngine5 - Widget Blueprint|750xauto

Widget Blueprint

r/UnrealEngine5 - Data Table|750xauto

Data Table

To play a video on the widget, you first need to create a Material and use the function GetBrushFromMaterial. To create the Material, right-click on the movie texture and select “Create Material.” Ensure that the Material Domain is set to User Interface.

Thanks for the response! Yes I am familiar with this I have put a video within a start menu. Is there a way to change the material within the datatable per piece of dialogue?