Variable {modded_name} does not work properly as on Docs

[Confiac1563]

I'm working on a modpack that has multiple versions, so I need a variable that can change the version when applied to multiple versions of the modpack. And I found 2 variables {client_version} and {modded_name}, I noticed that {client_version} gives the example output fabric, while {modded_name} gives Fabric, I choose {modded_name} to display it more "professionally". But when I enter the game, I see {modded_name} displayed exactly like {client_version}

Config HUD file

Ingame HUD]

[Minenash]

Can you take a screenshot of the upper left part of your F3 screen.

Also it's an you want us for it to be capitalized, then you can do {client_version -tc}

[Confiac1563]

Upper left part of your F3 screen

Btw, I tried {client_version -tc} but it didn't work either :/