Displaying a score as an Item's name.

I've made a chest ui system via a tutorial and have been implementing my own changes since finishing it. The problem I am experiencing has to do with the fact that I can't seem to get the name of an Item set to a score. I've tried tried everyting I was able to find and couldn't find a solution. The first image attached shows my ui page setup for the designated page on which the item with scoreboard has to be shown. The item I want to change it's name of is in slot 11b. I have tried putting the score into the text, and tried some things with tellraw which I couldn't really figure out. I've also tried it with an item modifier which I run with the function in the second image which runs every tick. The third image attached is the actual modifier, which does work. It just doesn't set the score as the item's name. I am pretty much at a loss here, given that I've tried everything I could find online so help would be greatly appreciated.