Leviathan.Antonioklaus said:
»Trying to help a friend. I don't play same (BRD for life!). Anyway, non of the Lua files have a set for 3rd eye? id there a reason for that?
Looks like he linked you some Arislan's luas, which are easier to start with, I guess, but you will end up using Selindrile's luas later anyway when you get more serious about Gearswap. So I would bite the bullet and just use Selindrile's luas now. There are instructions here, but the easiest thing to do is to back up and remove your entire Gearswap folder and then just use theirs.
https://github.com/Headtatt/Gearswap
If you want my luas to use as a base with Selindrile's, I have gear for most jobs barring a few. Obviously, SAM being one of my main ones and fully done. I am only really missing decent gear for RDM, WHM, and BST with mediocre THF, DRG, NIN and RUN luas that are unfinished or barebone DPS sets just to be able to crush Dynamis/Bumba and nothing else. Everything else is pretty well done though.
https://drive.google.com/file/d/1a2WPaXHSvzpQvGaOaLb8lzRUh1rBi8eU/view?usp=sharing
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If you just want the raw code, this may only work with Selindrile's luas, I haven't used Arislan's stuff in like 2 years, so it may not work with his old stuff, but this is what is in my Selindrile's luas for SAM Third Eye stuff.
sets.buff['Third Eye'] = {legs="Sakonji Haidate +3"}
If you want additional DT gear or something else locked on while you have Third Eye up, you can just add them in there, but nothing else really augments TE and the legs must be worn during it, there is no precast set for it.
Personally, I am in my DT set the entire time in serious content anyway, so I don't see a point in a TE set to begin with and have mine commented out so it doesn't swap. They just increase the counter rate, which is fine, but nothing defensive. I would rather keep my Empy Legs on for extra Haste and better offensive stat than use them or any other gear for that matter.