diff --git a/src/caosadvancedtools/models/parser.py b/src/caosadvancedtools/models/parser.py
index cd10d971aaf3f2e57508cd48f8a26ca012449a83..4e701e2f36c600ccfe1e3bbad8f49350f9918363 100644
--- a/src/caosadvancedtools/models/parser.py
+++ b/src/caosadvancedtools/models/parser.py
@@ -389,6 +389,8 @@ class Parser(object):
         datatype of properties is simply initialized with string. Here, we
         iterate over properties and check whether it is a base datatype of a
         name that was defined in the model (or extern part)
+
+        the string representations are replaced with caosdb objects
         """
 
         for key, value in self.model.items():