From 218725d7714cae85be408add1ee316b016bc43a9 Mon Sep 17 00:00:00 2001
From: Andrew Sliwinski <andrewsliwinski@acm.org>
Date: Thu, 26 Apr 2018 10:29:29 -0400
Subject: [PATCH] Cast 'create clone' argument to string. Resolves GH-974

---
 src/blocks/scratch3_control.js | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/blocks/scratch3_control.js b/src/blocks/scratch3_control.js
index 3f7a8e79b..4636d282d 100644
--- a/src/blocks/scratch3_control.js
+++ b/src/blocks/scratch3_control.js
@@ -144,15 +144,21 @@ class Scratch3ControlBlocks {
     }
 
     createClone (args, util) {
+        // Cast argument to string
+        args.CLONE_OPTION = Cast.toString(args.CLONE_OPTION);
+
+        // Set clone target
         let cloneTarget;
         if (args.CLONE_OPTION === '_myself_') {
             cloneTarget = util.target;
         } else {
             cloneTarget = this.runtime.getSpriteTargetByName(args.CLONE_OPTION);
         }
-        if (!cloneTarget) {
-            return;
-        }
+
+        // If clone target is not found, return
+        if (!cloneTarget) return;
+
+        // Create clone
         const newClone = cloneTarget.makeClone();
         if (newClone) {
             this.runtime.targets.push(newClone);