From a8888efb8832b53dcf1eeccbef2de17ed1b90e1c Mon Sep 17 00:00:00 2001
From: Andrej730 <azhilenkov@gmail.com>
Date: Thu, 10 Aug 2023 14:12:20 +0500
Subject: [PATCH] fixed bug getting port relating element in ifc2x3

---
 src/blenderbim/blenderbim/tool/system.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/blenderbim/blenderbim/tool/system.py b/src/blenderbim/blenderbim/tool/system.py
index 5796fcafa0..3bb15d5cb0 100644
--- a/src/blenderbim/blenderbim/tool/system.py
+++ b/src/blenderbim/blenderbim/tool/system.py
@@ -92,7 +92,11 @@ class System(blenderbim.core.tool.System):
 
     @classmethod
     def get_port_relating_element(cls, port):
-        return port.Nests[0].RelatingObject
+        if tool.Ifc.get_schema() == "IFC2X3":
+            element = port.ContainedIn[0].RelatedElement
+        else:
+            element = port.Nests[0].RelatingObject
+        return element
 
     @classmethod
     def get_port_predefined_type(cls, mep_element):