diff --git a/challenge/index.ts b/challenge/index.ts
index 73e28a5..a6e20d3 100644
--- a/challenge/index.ts
+++ b/challenge/index.ts
@@ -22,17 +22,33 @@ When solved correctly, the console should print out the following:
 "Payment of 1000000 microAlgos was sent to RRYKB23LFR62G3P4SFINZDQ4FVDUNWWQ4NOF7K6TP5GO65BQCHYMNTR3CU at confirmed round 59"
 */
 const suggestedParams = await algodClient.getTransactionParams().do();
-const txn = algosdk.makePaymentTxnWithSuggestedParamsFromObject({
+// const txn = algosdk.makePaymentTxnWithSuggestedParamsFromObject({
+//     from: sender.addr,
+//     suggestedParams,
+//     to: receiver.addr,
+//     amount: 1000000,
+// });
+
+// await algodClient.sendRawTransaction(txn).do();
+// const result = await algosdk.waitForConfirmation(
+//     algodClient,
+//     txn.txID().toString(),
+//     3
+// );
+const unsignedTxn = algosdk.makePaymentTxnWithSuggestedParamsFromObject({
     from: sender.addr,
-    suggestedParams,
+    suggestedParams: suggestedParams,
     to: receiver.addr,
     amount: 1000000,
 });
 
-await algodClient.sendRawTransaction(txn).do();
+const txgroup = algosdk.assignGroupID([unsignedTxn]);
+const signedTxn1 = txgroup[0].signTxn(sender.sk);
+
+await algodClient.sendRawTransaction(signedTxn1).do();
 const result = await algosdk.waitForConfirmation(
     algodClient,
-    txn.txID().toString(),
+    unsignedTxn.txID().toString(),
     3
 );
 
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..b42903b
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,27 @@
+{
+  "name": "challenge-1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "devDependencies": {
+        "@types/node": "^20.12.2"
+      }
+    },
+    "node_modules/@types/node": {
+      "version": "20.12.2",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-20.12.2.tgz",
+      "integrity": "sha512-zQ0NYO87hyN6Xrclcqp7f8ZbXNbRfoGWNcMvHTPQp9UUrwI0mI7XBz+cu7/W6/VClYo2g63B0cjull/srU7LgQ==",
+      "dev": true,
+      "dependencies": {
+        "undici-types": "~5.26.4"
+      }
+    },
+    "node_modules/undici-types": {
+      "version": "5.26.5",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz",
+      "integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==",
+      "dev": true
+    }
+  }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..2d3bad2
--- /dev/null
+++ b/package.json
@@ -0,0 +1,5 @@
+{
+  "devDependencies": {
+    "@types/node": "^20.12.2"
+  }
+}