diff --git a/Chapter 3/Exercise 3.4 b/Chapter 3/Exercise 3.4
new file mode 100644
index 0000000..fec4127
--- /dev/null
+++ b/Chapter 3/Exercise 3.4	
@@ -0,0 +1,15 @@
+const myCar = {
+    make: "Toyota",
+    model: "Camry",
+    tires: 4,
+    doors: 4,
+    color: "blue",
+    forSale: false
+};
+
+let propColor = "color";
+myCar[propColor] = "red";
+propColor = "forSale";
+myCar[propColor] = true;
+console.log(myCar.make + " " + myCar.model);
+console.log(myCar.forSale);