diff --git a/guide/english/certifications/javascript-algorithms-and-data-structures/basic-javascript/understand-string-immutability/index.md b/guide/english/certifications/javascript-algorithms-and-data-structures/basic-javascript/understand-string-immutability/index.md
index 4bdae9338f..a98959189b 100644
--- a/guide/english/certifications/javascript-algorithms-and-data-structures/basic-javascript/understand-string-immutability/index.md
+++ b/guide/english/certifications/javascript-algorithms-and-data-structures/basic-javascript/understand-string-immutability/index.md
@@ -3,8 +3,19 @@ title: Understand String Immutability
---
## Understand String Immutability
-This is a stub. Help our community expand it.
+## Problem Explanation
+Correct the assignment to ```myStr``` so it contains the string value of ```Hello World``` using the approach shown in the example above.
-This quick style guide will help ensure your pull request gets accepted.
+## Hint
+Instead of ```Jello World ```, ```myStr``` should be assigned ```Hello World```.
-
+ ## Spoiler Alert! Solution ahead.
+**Solution**
+```javascript
+// Setup
+var myStr = "Jello World";
+ // Only change code below this line
+ myStr = "Hello World";
+```
+ ## Code Explanation
+String literals such as ```"Jello World"``` cannot be changed by the individual letter (hence being *immutable*), so the variable containing the incorrect string must be replaced with the desired string using the assignment operator ```=```