go to post Kevin Brown · Jun 5, 2020 Stuart, Disclaimer: I'm by far not an expert in Ensemble/Cache Since your inbound is set to DocType is 2.4:ORU_R01, below is the segment path for OBX Schema Category: 2.4Message Structure: ORU_R01Segment Structure: OBX Path you followed to get to this Segment Structure: PIDgrpgrp().ORCgrp().OBXgrp().OBX You will need to set the index on the PIDgrpgrp and ORCgrp or if you always receive 1 PID segment and 1 ORC segment, then those values can be set to 1. I ran the following code snippet using 2.4 ORU DocType and obxCounter returned the OBX segment count. set obxCounter=source.GetValueAt("PIDgrpgrp("_(1)_").ORCgrp("_(1)_").OBXgrp("_("*")_")")