diff --git a/challenge/index.ts b/challenge/index.ts
index 73e28a5..fa6964f 100644
--- a/challenge/index.ts
+++ b/challenge/index.ts
@@ -26,14 +26,22 @@ const txn = algosdk.makePaymentTxnWithSuggestedParamsFromObject({
     from: sender.addr,
     suggestedParams,
     to: receiver.addr,
-    amount: 1000000,
+    amount: 1000000
 });
+console.log(txn);
 
-await algodClient.sendRawTransaction(txn).do();
+// Sign the transaction with sender's secret key
+const signedTxn = txn.signTxn(sender.sk);
+
+// And send the now Signed transaction!
+const txId = await algodClient.sendRawTransaction(signedTxn).do();
+console.log("Transaction ID: ", txId);
+
+// Wait for confirmation
 const result = await algosdk.waitForConfirmation(
     algodClient,
-    txn.txID().toString(),
+    txId.txId,
     3
 );
 
-console.log(`Payment of ${result.txn.txn.amt} microAlgos was sent to ${receiver.addr} at confirmed round ${result['confirmed-round']}`);
\ No newline at end of file
+console.log(`Payment of ${result.txn.txn.amt} microAlgos was sent to ${receiver.addr} at confirmed round ${result['confirmed-round']}`);