diff --git a/examples/projects/lambda.lisp b/examples/projects/lambda.lisp
new file mode 100644
index 0000000..4c993d9
--- /dev/null
+++ b/examples/projects/lambda.lisp
@@ -0,0 +1,29 @@
+(resize 600 200)
+
+(clear)
+
+(def colors 
+  ("#72dec2" "#316067"))
+
+(def picked-colors 
+  ("#000" "#000" "#000" "#000" "#000" "#000" "#000" "#000" "#000"))
+
+(fill 
+  (rect 0 0 600 200) 
+  (gradient 
+    (guide 
+      (line 0 100 600 100)) colors))
+
+(each picked-colors 
+  (λ 
+    (color id) 
+    (
+      (set picked-colors id 
+        (pick 
+          (guide 
+            (pos 
+              (mul id 
+                (div 600 9)) 100)))))))
+
+(echo 
+  (get picked-colors:1 "hex"))
\ No newline at end of file
diff --git a/index.html b/index.html
index 57fff2b..fa4141c 100644
--- a/index.html
+++ b/index.html
@@ -1203,7 +1203,7 @@ function Library (client) {
   this.each = (arr, fn) => { // Run a function for each element in a list.
     for (let i = 0; i < arr.length; i++) {
       const arg = arr[i]
-      fn(arg)
+      fn(arg,i)
     }
   }
   this.map = (arr, fn) => { // Run a function on each element in a list.
diff --git a/scripts/library.js b/scripts/library.js
index 2f80e12..7337273 100644
--- a/scripts/library.js
+++ b/scripts/library.js
@@ -416,7 +416,7 @@ function Library (client) {
   this.each = (arr, fn) => { // Run a function for each element in a list.
     for (let i = 0; i < arr.length; i++) {
       const arg = arr[i]
-      fn(arg)
+      fn(arg,i)
     }
   }