diff --git a/examples/assign_op.ast b/examples/assign_op.ast
index 5e7d2fd..e289bee 100644
--- a/examples/assign_op.ast
+++ b/examples/assign_op.ast
@@ -12,4 +12,12 @@ print("c=", c)
 
 let d = 10
 c /= 5
-print("d=", d)
\ No newline at end of file
+print("d=", d)
+
+let arr = [1, 2, 3]
+arr[0] += 2
+print(arr)
+
+let obj = { name: "elmma", age: 26 }
+obj.age -= 2
+print(obj)
\ No newline at end of file