So I'm trying to add an unarmored armor class to my Sorcerous origin. Here's the settings I'm using:
Modifier Type: Set
Modifier Subtype: Unarmored Armor Class
Ability Score: DEX

Now I've played around with the Fixed Value setting and eventually left it blank. My character has an armor class of 27 with this feature! It says in the armor description that my character has a +2 from DEX, an armor of 10 and a bonus of +15 from the unarmored bonus. What did I do wrong and how do I fix it?

Unarmored Armor Class already automaticity includes Dex. If what you want is 10+Dex then you don’t have to change anything at all and it will automatically already do that.

What exactly are you trying to accomplish? You tell me what you want it to do and if it’s possible I’ll tell you how to set it up.

I'm trying to make an AC=13+DEX like the Unarmored Defense of the Draconic and Aberrant Mind Sorcerous Origins.

Modifier—>Set

Modifier Subtype—>Unarmored Armor Class

Fixed Value—> “3”

thou art a god. ty.