diff --git a/src/lockAda.ts b/src/lockAda.ts
new file mode 100644
index 0000000..0854a1d
--- /dev/null
+++ b/src/lockAda.ts
@@ -0,0 +1,101 @@
+import { promises as fs } from 'fs';
+import {
+  Address,
+  Assets,
+  ByteArrayData,
+  ConstrData,
+  Datum,
+  hexToBytes,
+  IntData,
+  ListData,
+  NetworkEmulator,
+  NetworkParams,
+  Program, 
+  Tx,
+  TxOutput,
+  Value,
+} from "@hyperionbt/helios";
+
+export const lockAda = async (params : any) => {
+		
+	const alice = params[0] as object;
+	const bob = params[1] as object;
+	const adaQty = params[2] as number;
+	const duration = params[3] as number;
+
+	const benAddr = bob.address;
+	const emulatorDate = 1677108984000; 
+	const deadline = new Date(emulatorDate + duration);
+	const benPkh = bob.pubKeyHash;
+	const ownerPkh = alice.pubKeyHash;
+
+	const lovelaceAmt = Number(adaQty) * 1000000;
+	const adaAmountVal = new Value(BigInt(lovelaceAmt));
+
+	const datum = new ListData([new ByteArrayData(ownerPkh.bytes),
+				    new ByteArrayData(benPkh.bytes),
+				    new IntData(BigInt(deadline.getTime()))]);
+	const inlineDatum = Datum.inline(datum);
+
+	const inputUtxos = await alice.utxos;
+
+	const tx = new Tx();
+
+	tx.addInputs(inputUtxos);
+
+	const mintScript =`minting nft
+
+	const TX_ID: ByteArray = #` + inputUtxos[0].txId.hex + `
+	const txId: TxId = TxId::new(TX_ID)
+	const outputId: TxOutputId = TxOutputId::new(txId, ` + inputUtxos[0].utxoIdx + `)
+
+	func main(ctx: ScriptContext) -> Bool {
+		tx: Tx = ctx.tx;
+		mph: MintingPolicyHash = ctx.get_current_minting_policy_hash();
+
+		assetclass: AssetClass = AssetClass::new(
+		mph,
+		"Vesting Key".encode_utf8()
+		);
+		value_minted: Value = tx.minted;
+
+		// Validator logic starts
+		(value_minted == Value::new(assetclass, 1)).trace("NFT1: ") &&
+		tx.inputs.any((input: TxInput) -> Bool {
+					(input.output_id == outputId).trace("NFT2: ")
+					}
+		)
+	}`
+
+	const optimize = false; //maybe add to test context?
+	const mintProgram = Program.new(mintScript).compile(optimize);
+
+	tx.attachScript(mintProgram);
+
+	// Construct the NFT that we will want to send as an output
+	const nftTokenName = ByteArrayData.fromString("Vesting Key").toHex();
+	const tokens: [number[], bigint][] = [[hexToBytes(nftTokenName), BigInt(1)]];
+
+	// Create an empty Redeemer because we must always send a Redeemer with
+	// a plutus script transaction even if we don't actually use it.
+	const mintRedeemer = new ConstrData(0, []);
+
+	// Indicate the minting we want to include as part of this transaction
+	tx.mintTokens(
+		mintProgram.mintingPolicyHash,
+		tokens,
+		mintRedeemer
+	)
+
+	const lockedVal = new Value(adaAmountVal.lovelace, new Assets([[mintProgram.mintingPolicyHash, tokens]]));
+	
+	// Add the destination address and the amount of Ada to lock including a datum
+	tx.addOutput(new TxOutput(validatorAddress, lockedVal, inlineDatum));
+
+	// beforeAll?
+	const networkParamsFile = await fs.readFile('./src/preprod.json', 'utf8');
+	const networkParams = new NetworkParams(JSON.parse(networkParamsFile.toString()));
+
+	await tx.finalize(networkParams, alice.address);
+	const txId = await network.submitTx(tx);
+}
diff --git a/tests/helios-vesting.test.ts b/tests/helios-vesting.test.ts
index 993957a..81b58ee 100644
--- a/tests/helios-vesting.test.ts
+++ b/tests/helios-vesting.test.ts
@@ -16,6 +16,7 @@ import {
   TxOutput,
   Value,
 } from "@hyperionbt/helios";
+import {lockAda} from './src/lockAda.ts';
 
 describe("a vesting contract", async () => {
 
@@ -66,7 +67,7 @@ describe("a vesting contract", async () => {
 		const duration = 10000000;
 
 		const emulatorDate = 1677108984000; 
-		const deadline = new Date(emulatorDate + duration );
+		const deadline = new Date(emulatorDate + duration);
 		const benPkh = bob.pubKeyHash;
 		const ownerPkh = alice.pubKeyHash;
 
@@ -149,4 +150,11 @@ describe("a vesting contract", async () => {
 		expect(Object.keys((await network.getUtxos(validatorAddress))[0].value.dump().assets)[0]).toEqual(mintProgram.mintingPolicyHash.hex);
 
 	})
+
+	it ("tests lockAda tx import", async ({network, alice, bob, validatorAddress}) => {
+// https://github.com/lley154/helios-examples/blob/704cf0a92cfe252b63ffb9fd36c92ffafc1d91f6/vesting/pages/index.tsx#LL157C1-L280C4
+		const adaQty = 10 ;
+		const duration = 10000000;
+		await lockAda(alice, bob, adaQty, duration)
+	})
 })