[Fenris447]

Ah.

Well, this is going to be both complicated and imperfect. Imperfect because I've never found a way to change the "Max. Dex.: +2" text to say anything else. Complicated because it's got a lot going on.

The key here is going to be hero.childfound[ArmorClass].field[tACDexMod].value. Set at a timing of Post-Attributes 3000, this is where Hero Lab stores the hero's AC that it's getting from its DEX. Normally, that's going to max out at 2 with any medium armor. But you should be able to grab the DEX mod, check if it's 3 (or whatever your custom armor allows), and change it to match what you want manually. Look up Just make sure you make the timing very late in the Post-Attributes phase or later.

Try something like:

hero.childfound[ArmorClass].field[tACDexMod].value = minimum(3,hero.childfound[aDEX].field[aModBonus].value)

You might have to play with the timings, pushing it deep (10,000+) into the Final Phase, since there's plenty that could add or subtract from your DEX bonus.