diff --git a/org_mode_samples/property_drawer/add_in_child.org b/org_mode_samples/property_drawer/add_in_child.org
new file mode 100644
index 0000000..aa3c11f
--- /dev/null
+++ b/org_mode_samples/property_drawer/add_in_child.org
@@ -0,0 +1,9 @@
+* foo
+** bar
+:PROPERTIES:
+:lorem: ipsum
+:END:
+*** baz
+:PROPERTIES:
+:lorem+:   dolar
+:END: