diff --git a/mmtfPyspark/webfilters/advancedQuery.py b/mmtfPyspark/webfilters/advancedQuery.py
index 558563f..e6b02b4 100644
--- a/mmtfPyspark/webfilters/advancedQuery.py
+++ b/mmtfPyspark/webfilters/advancedQuery.py
@@ -93,6 +93,7 @@ def _get_structure_entity_id(self, structure, origStructureId, origEntityId):
             pass
 
         try:
+            print("structure.structure_id:", structure.structure_id)
             pos = structure.structure_id.rindex(".")
 
             valueStructureId = structure.structure_id[:structure.structure_id.index(