During the abdominal component separation, dissection of the tissue planes housing the sensory fibers will be exposed to allow insertion of a large spinal needle under direct visualization on each side of the abdominal wall. Depending on the study group, the attending surgeon will inject an unknown solution (solution A or B) of either 30ml of Exparel ((bupivacaine liposome injectable suspension) 1.3% ( 13.3mg/ml)). The final test solution will be prepared in the IDS pharmacy by adding a 20 mL Exparel vial and 40cc of normal saline for a total of 60cc with a bupivacaine concentration of 0.44%. This will then be split into two 30cc solutions to be injected into each side of the transverse abdominal plane. A patient in the placebo group will be injected with 30cc of Normal Saline into the TAP region on each side of the abdomen.