diff --git a/README.md b/README.md
index fcb6392..8789942 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ import pandas as pd
 from tabulate import tabulate
 
 from SimCAD.engine import ExecutionMode, ExecutionContext, Executor
-sandbox
+from sandbox.validation import config1, config2
 from SimCAD import configs
 
 # ToDo: pass ExecutionContext with execution method as ExecutionContext input
diff --git a/sandbox/sim_test.py b/sandbox/sim_test.py
index 935b49f..8259068 100644
--- a/sandbox/sim_test.py
+++ b/sandbox/sim_test.py
@@ -3,8 +3,8 @@ from tabulate import tabulate
 
 from SimCAD.engine import ExecutionMode, ExecutionContext, Executor
 # from sandbox.validation import config1, config2
-# from sandbox import config4
-# from sandbox import config_zx
+# from sandbox.barlin import config4
+# from sandbox.zx import config_zx
 from sandbox.barlin import config6atemp #config6aworks,
 from SimCAD import configs