diff --git a/src/cdl_parser/cli.py b/src/cdl_parser/cli.py
index 1d300d4..d56e14e 100644
--- a/src/cdl_parser/cli.py
+++ b/src/cdl_parser/cli.py
@@ -110,7 +110,7 @@ def main(args: list[str] | None = None) -> int:
                 print(f"  System: {desc.system}")
                 print(f"  Point Group: {desc.point_group}")
                 print(f"  Forms ({len(desc.forms)}):")
-                for form in desc.forms:
+                for form in desc.flat_forms():
                     print(f"    {form.miller} @ scale={form.scale}")
                 if desc.modifications:
                     print(f"  Modifications ({len(desc.modifications)}):")
diff --git a/src/cdl_parser/parser.py b/src/cdl_parser/parser.py
index 61a8672..5a2d19f 100644
--- a/src/cdl_parser/parser.py
+++ b/src/cdl_parser/parser.py
@@ -752,7 +752,7 @@ def _parse_feature_value(self) -> int | float | str:
         elif token.type == TokenType.FLOAT:
             return float(self._advance().value)
         elif token.type == TokenType.IDENTIFIER:
-            return self._advance().value.lower()
+            return str(self._advance().value).lower()
         elif token.type == TokenType.POINT_GROUP:
             # Handle numeric point groups like '1', '3' as values
             value = token.value
@@ -762,7 +762,7 @@ def _parse_feature_value(self) -> int | float | str:
                 return result
             except ValueError:
                 pass
-            return self._advance().value
+            return str(self._advance().value)
         raise ParseError("Expected feature value", position=token.position)
 
     def _parse_phenomenon(self) -> PhenomenonSpec: