diff --git a/.gitignore b/.gitignore
index 6199f17..114e702 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 *.pyc
 .pylero
 .pylarion
+*.egg-info*
diff --git a/src/pylero/base_polarion.py b/src/pylero/base_polarion.py
index 53ded2a..55b019a 100644
--- a/src/pylero/base_polarion.py
+++ b/src/pylero/base_polarion.py
@@ -604,12 +604,16 @@ def _custom_getter(self, field_name):
                 elif csm.get("is_array"):
                     obj = []
                     # ArrayOf Polarion objects have a double list.
-                    for inst in custom_fld.value[0]:
-                        if csm["cls"]._cls_inner._id_field:
-                            item_inst = csm["cls"]._cls_inner(suds_object=inst)
-                            obj.append(getattr(item_inst, item_inst._id_field))
-                        else:
-                            obj.append(csm["cls"]._cls_inner(suds_object=inst))
+                    if custom_fld.value:
+                        for inst in custom_fld.value[0]:
+                            if csm["cls"]._cls_inner._id_field:
+                                item_inst = csm["cls"]._cls_inner(
+                                    suds_object=inst)
+                                obj.append(
+                                    getattr(item_inst, item_inst._id_field))
+                            else:
+                                obj.append(csm["cls"]._cls_inner(
+                                    suds_object=inst))
                 elif csm.get("cls"):
                     obj = csm["cls"](suds_object=custom_fld.value)
                 else:
diff --git a/src/pylero/work_item.py b/src/pylero/work_item.py
index c29fe41..07a42f0 100644
--- a/src/pylero/work_item.py
+++ b/src/pylero/work_item.py
@@ -1426,6 +1426,8 @@ def get_custom_fields(cls, project_id):
                                                                None)
             cls._cls_suds_map[local_name]["is_custom"] = True
             cls._cls_suds_map[local_name]["control"] = cls._wi_type
+            if parse_type[1].startswith("Array"):
+                cls._cls_suds_map[local_name]["is_array"] = True
             if cft.required:
                 cls._required_fields.append(local_name)
         cls._got_custom_fields = True