Troubles in implementation 4 about spdx-3-serialization-prototype-playground HOT 2 OPEN

diff --git a/implementations/4/combine_docs.py b/implementations/4/combine_docs.py
index 093ef50..89005a4 100644
--- a/implementations/4/combine_docs.py
+++ b/implementations/4/combine_docs.py
@@ -10,8 +10,8 @@ def combine(doc1, doc2):
     # We assume Acme Company is combining the documents, so the document
     # level id's hold
     org_id = "urn:acme.com-4fe40e24-20e3-11ee-be56-0242ac120002"
-    profiles = [model.ProfileIdentifierType.core,
-                model.ProfileIdentifierType.software]
+    profiles = [model.ProfileIdentifierType.CORE,
+                model.ProfileIdentifierType.SOFTWARE]
     ts = utils.mint([org_id],
                     profiles,
                     "combine_docs.py")
diff --git a/implementations/4/utils.py b/implementations/4/utils.py
index 76723ed..cbedc95 100644
--- a/implementations/4/utils.py
+++ b/implementations/4/utils.py
@@ -26,7 +26,7 @@ def created_dict(cinfo):
     # converts a CreationInfo object into a dictionary
     profiles = []
     for pro in cinfo.profile:
-        profiles.append(pro.name)
+        profiles.append(pro.name.swapcase())
     return({"specVersion": f"{cinfo.spec_version.major}.{cinfo.spec_version.minor}.{cinfo.spec_version.patch}",
             "created": cinfo.created.strftime("%Y-%m-%dT%H:%M:%SZ"),
             "createdBy": cinfo.created_by,
@@ -39,7 +39,7 @@ def dict_created(cblob):
     # converts a creationInfo dictionary into a CreationInfo object
     pl = []
     for profile in cblob["profile"]:
-        pl.append(model.ProfileIdentifierType[profile])
+        pl.append(model.ProfileIdentifierType[profile.swapcase()])
     return model.CreationInfo(spec_version=Version(cblob["specVersion"]),
                               created=datetime.strptime(
                                   cblob["created"], "%Y-%m-%dT%H:%M:%SZ"),