Dynamically Expanding Table in Power BI Based on Slicer Selection

 olgad 

Dear Olga Dontsova,

I wanted to take a moment to express my sincere gratitude for your assistance,
Your solution was incredibly helpful and provided valuable insight that has greatly benefited me in my work.

Thank you once again for your support and assistance.
It is community members like you who make the Power BI community such a valuable resource for learning and collaboration.
pls connect linkedin : ) 
linkedin.com/in/jackson-s-652396240

 "
I would do it differently. No unpivoting, leave the columns as they were. 

Do you know field parameters? Modelling-New Parameter-Fields then pick all your columns that you would like to display. 
Use this field parameter as a slicer and place it into the table. Can it be the table?? Matrix always summarizes, in your case it always took the first value. Why matrix shall be used?? 

 "

this solution by olgad