diff --git a/examplemods/mobnpcspawner.js b/examplemods/mobnpcspawner.js
index 30c6a55..4d681dd 100644
--- a/examplemods/mobnpcspawner.js
+++ b/examplemods/mobnpcspawner.js
@@ -23,7 +23,7 @@
                 sheep.$noGravity = 1;
 
                 // Make sheep invincible
-                sheep.$setEntityInvulnerable(1);
+                sheep.$invulnerable = 1
 
                 // Add the sheep to the world
                 world.spawnEntityInWorld(sheep);