diff --git a/nac3artiq/demo/module.elf b/nac3artiq/demo/module.elf
index 21483fe..31643eb 100644
Binary files a/nac3artiq/demo/module.elf and b/nac3artiq/demo/module.elf differ
diff --git a/nac3artiq/demo/test_cache.py b/nac3artiq/demo/test_cache.py
index 75d226c..101b11c 100644
--- a/nac3artiq/demo/test_cache.py
+++ b/nac3artiq/demo/test_cache.py
@@ -1,84 +1,20 @@
 from min_artiq import *
 from numpy import int32
 
-# Simulate CacheError from ARTIQ
-class CacheError(Exception):
-    pass
-
 @nac3
-class _Cache:
+class StringListTest:
     core: KernelInvariant[Core]
-    # Properly declare core_cache as a KernelInvariant
-    core_cache: KernelInvariant[dict[str, list[int32]]]
 
     def __init__(self):
         self.core = Core()
-        self.core_cache = {}
 
-    def build(self):
-        # Simplified version of EnvExperiment.build()
-        # Core and core_cache are already set in __init__
-        pass
+    @kernel 
+    def test_string_and_list(self, key: str, value: list[int32]):
+        print_int32(int32(42))
 
-    @kernel
-    def get(self, key: str) -> list[int32]:
-        return self.core_cache.get(key, [])
-
-    @kernel
-    def put(self, key: str, value: list[int32]):
-        self.core_cache[key] = value
-
-    @kernel
-    def get_put(self, key: str, value: list[int32]):
-        self.get(key)
-        self.put(key, value)
-
-class CacheTest:
-    def create(self, cls):
-        return cls()
-
-    def assertEqual(self, a, b):
-        assert a == b, f"Expected {a} to equal {b}"
-
-    def assertRaises(self, exc_type):
-        class RaiseContext:
-            def __init__(self, test_case, expected_exc):
-                self.test_case = test_case
-                self.expected_exc = expected_exc
-            def __enter__(self):
-                return self
-            def __exit__(self, exc_type, exc_val, exc_tb):
-                if exc_type is None:
-                    raise AssertionError(f"Expected {self.expected_exc}")
-                if not issubclass(exc_type, self.expected_exc):
-                    raise AssertionError(f"Expected {self.expected_exc}, got {exc_type}")
-                return True
-        return RaiseContext(self, exc_type)
-
-    def test_get_empty(self):
-        exp = self.create(_Cache)
-        self.assertEqual(exp.get("x1"), [])
-
-    def test_put_get(self):
-        exp = self.create(_Cache)
-        exp.put("x2", [int32(1), int32(2), int32(3)])
-        self.assertEqual(exp.get("x2"), [int32(1), int32(2), int32(3)])
-
-    def test_replace(self):
-        exp = self.create(_Cache)
-        exp.put("x3", [int32(1), int32(2), int32(3)])
-        exp.put("x3", [int32(1), int32(2), int32(3), int32(4), int32(5)])
-        self.assertEqual(exp.get("x3"), [int32(1), int32(2), int32(3), int32(4), int32(5)])
-
-    def test_borrow(self):
-        exp = self.create(_Cache)
-        exp.put("x4", [int32(1), int32(2), int32(3)])
-        with self.assertRaises(CacheError):
-            exp.get_put("x4", [])
+def test_params():
+    exp = StringListTest()
+    exp.test_string_and_list("x4", [])
 
 if __name__ == "__main__":
-    test = CacheTest()
-    test.test_get_empty()
-    test.test_put_get()
-    test.test_replace()
-    test.test_borrow()
+    test_params()