diff --git a/pyhon/hon.py b/pyhon/hon.py
index d6c73e2..dfd117e 100644
--- a/pyhon/hon.py
+++ b/pyhon/hon.py
@@ -103,8 +103,10 @@ class Hon:
                     )
             await self._create_appliance(appliance, self.api)
         if (
-            test_data := self._test_data_path / "hon-test-data" / "test_data"
-        ).exists() or (test_data := test_data / "test_data").exists():
+            self._test_data_path
+            and (test_data := self._test_data_path / "hon-test-data" / "test_data").exists()
+            or (test_data := test_data / "..").exists()
+        ):
             api = TestAPI(test_data)
             for appliance in await api.load_appliances():
                 await self._create_appliance(appliance, api)
diff --git a/pyhon/parameter/range.py b/pyhon/parameter/range.py
index 76bd2b6..fa00de0 100644
--- a/pyhon/parameter/range.py
+++ b/pyhon/parameter/range.py
@@ -69,11 +69,9 @@ class HonParameterRange(HonParameter):
 
     @property
     def values(self) -> List[str]:
-        if isinstance(self.step, float):
-            result = []
-            i = self.min
-            while i <= self.max:
-                i += self.step
-                result.append(str(i))
-            return result
-        return [str(i) for i in range(int(self.min), int(self.max) + 1, int(self.step))]
+        result = []
+        i = self.min
+        while i < self.max:
+            i += self.step
+            result.append(str(i))
+        return result