struggling with Week1/InClass/D-methods/exercise-5.js

I have tried different ways to include the £ amount eg. this.cappuccino OR this.price.cappuccino OR this.coffee Not sure if I'm getting closer or further from the solution.

Week-1/InClass/D-methods/exercise-5.js

@@ -20,13 +20,26 @@ let coffeeMachine = {
         return insertedAmount = amount;
     },
     getCoffee: function (coffee) {
-        let prices = coffee;
-        if (insertedAmount >= 3) {
+        // check coffee entered matches the correct amount
+        // if true, return Please take your coffee
+        // if false, return Sorry
+        if (insertedAmount >= 3 && coffee === "flatWhite") {
             return `Please take your ${coffee}`;
-        } else if (insertedAmount >= 2.4) {
+        } else if (insertedAmount < 3 && coffee === "flatWhite") {
+            return `Sorry you don't have enough money for a ${coffee}`;
+
+
+        } else if (insertedAmount >= 2.4 && coffee === "cappuccino") {
             return `Please take your ${coffee}`;
-        } else if (insertedAmount >= 1.5) {
+        } else if (insertedAmount < 2.4 && coffee === "cappuccino") {
+            return `Sorry you don't have enough money for a ${coffee}`;
+
+
+        } else if (insertedAmount >= 1.5 && coffee === "blackCoffee") {
             return `Please take your ${coffee}`;
+        } else if (insertedAmount < 1.5 && coffee === "blackCoffee") {
+            return `Sorry you don't have enough money for a ${coffee}`;
+        }
     }
 };