diff --git a/Prog/Array.md b/Prog/Array.md
index 6cedbe8..cc0ad43 100644
--- a/Prog/Array.md
+++ b/Prog/Array.md
@@ -1,3 +1,4 @@
+## Simple array (1 dimension)
 An array is a vector in a collection
 
 To declare an array we use :
@@ -16,4 +17,24 @@ b = 0
 22
 ```
 
-We see that an array start from $0$ to $n-1$
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+We see that an array start from $0$ to $n-1$
+
+## Complex array (x dimension)
+To create a vect with multiple dimension, we just have to declare an array and add a brackets to define multiple dimension
+
+```csharp
+// First version
+public static void Main() {
+	int[,] mat = new int[12, 9] // Declare an array of two dimensions mat with default value for [0] 
+	mat[3, 4] = 12;
+}
+
+// Second version
+public static void Main() {
+	int[,] mat = {
+		{ 2, 3 },
+		{ 4, 5 }
+	};
+	mat[3, 4] = 12;
+}
+```
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