 The purpose of the study is to compare pain control after robotic hysterectomy surgery using either liposomal bupivacaine or Bupivacaine when injected during a transversus abdominis plane TAP block. Robotic hysterectomy is when a patient is electively having robotic assisted removal of ones uterus. Both medications liposomal bupivacaine and Bupivacaine are standard of care in these types of surgeries. 