PLEASE HELP WITH EDITING BRACKEYS DIALOGUE SYSTEM TO MY PREFERENCES

Hi,
I need help with dialogue system. The system does not need to be fancy, it could be pretty easy. It just needs to be activated on trigger and when E is pressed, it also must have more parts of the dialogue so it is not only one part and then it ends, to go through the parts of the dialogue I want the E button. I have the trigger setted up cause I made press E to interact UI on the trigger. Please someone help, I have made dialogue system out of Brackeys tutorial but it doesnt work so someone please help me edit the system by Brackeys. I do not want to scrap my game only because dialogue system. Thanks for replys