1. Place the pork in a multi-function pot and pour the Florida Orange Juice over the pork.
2. Place the lid on the pot and twist to lock. Check to make sure the knob is in the sealed position. Press the manual button (high pressure) and adjust time to 50 minutes.
3. When the time is up, allow the pressure to naturally release (about 20 minutes).
4. While the pork is cooking, place the chiles in a bowl, cover with hot water and soak for 10 to 15 minutes to soften.
5. Place the chiles and 1 ½ cups of the liquid from soaking into a blender.
6. Add the onion, garlic, parsley, oregano, cumin, salt, pepper and vinegar and puree until smooth. Set aside.
7. Shred the pork with two forks inside the pot.
8. Add the sauce to the shredded pork and toss to combine. Cook for 15 to 20 minutes so the pork can absorb the sauce.
9. Serve wrapped in lettuce leaves or in warm flour tortillas with diced avocado.