From 0c6a3eafd2a93ec985f5a3540ee75f7c78347e3a Mon Sep 17 00:00:00 2001
From: Dion Moult <dion@thinkmoult.com>
Date: Wed, 13 Oct 2021 12:18:29 +1100
Subject: [PATCH] IfcCSV now supports setting properties to null values. Neat.

---
 src/ifccsv/ifccsv.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/ifccsv/ifccsv.py b/src/ifccsv/ifccsv.py
index f1ced2f432..95ee76ac6b 100755
--- a/src/ifccsv/ifccsv.py
+++ b/src/ifccsv/ifccsv.py
@@ -90,6 +90,10 @@ class IfcAttributeSetter:
             if property.Name != name:
                 continue
 
+            if value.lower() in ["null", "none"]:
+                property.NominalValue = None
+                continue
+
             # In lieu of loading a map for data casting, we only have four
             # options, which this ugly method will determine.
             if property.NominalValue is None: