So, it seems so simple but....

Lets say you want to make a minor 7th chord into a dominant seventh chord, for example, in the key of C, if you wanted to sound an Am7 as A7, but you wanted to write this in Roman numerals

So, A minor is the VI chord, I would think of this as A C E. If I wanted to denote this as a minor 7th chord, then I would write Am7 ACEG. If I then wanted to change the chord to a dominant 7th of the same root I would write A7 A C# E G, .
Now, in Roman numerals. Firstly the triad chord would simply be VI. Secondly if I wanted to describe a minor seventh chord I would write VI7 ( I guess), Now, if I want to write a dominant 7th chord in the sixth position, I would write what? A VI7? But that's both a dominant and a minor seventh chord sharing the same symbol?

Do I have something wrong?

Z

Win 11 64, Asus Rog Strix z390 mobo, 64 gig RAM, 8700k