--- a
+++ b/examples/legacy/sim_Prosthetics_randomrun.py
@@ -0,0 +1,9 @@
+from osim.env import ProstheticsEnv
+
+env = ProstheticsEnv(seed=5)
+env.change_model(model='3D', prosthetic=True, difficulty=2, seed=11)
+observation = env.reset()
+for i in range(300):
+    observation, reward, done, info = env.step(env.action_space.sample(), project = False)
+    if done:
+        env.reset(seed=10)