--- a/tests/package.json
+++ b/tests/package.json
@@ -20,6 +20,7 @@
     "load": "mocha --timeout 9999999 -r ts-node/register ./**/*.load.ts",
     "testAddCollectionAdmin": "mocha --timeout 9999999 -r ts-node/register ./**/addCollectionAdmin.test.ts",
     "testSetSchemaVersion": "mocha --timeout 9999999 -r ts-node/register ./**/setSchemaVersion.test.ts",
+    "testSetVariableMetaData": "mocha --timeout 9999999 -r ts-node/register ./**/setVariableMetaData.test.ts",
     "testSetCollectionLimits": "mocha --timeout 9999999 -r ts-node/register ./**/setCollectionLimits.test.ts",
     "testRemoveCollectionAdmin": "mocha --timeout 9999999 -r ts-node/register ./**/removeCollectionAdmin.test.ts",
     "testConnection": "mocha --timeout 9999999 -r ts-node/register ./**/connection.test.ts",
--- /dev/null
+++ b/tests/src/setVariableMetaData.test.ts
@@ -0,0 +1,104 @@
+import { IKeyringPair } from '@polkadot/types/types';
+import chai from 'chai';
+import chaiAsPromised from 'chai-as-promised';
+import privateKey from './substrate/privateKey';
+import usingApi from './substrate/substrate-api';
+import {
+  burnItemExpectSuccess,
+  createCollectionExpectSuccess,
+  createItemExpectSuccess,
+  destroyCollectionExpectSuccess,
+  findNotExistingCollection,
+  setVariableMetaDataExpectFailure,
+  setVariableMetaDataExpectSuccess,
+} from './util/helpers';
+
+chai.use(chaiAsPromised);
+const expect = chai.expect;
+
+describe('Integration Test setVariableMetaData', () => {
+  const data = [1, 2, 254, 255];
+
+  let alice: IKeyringPair;
+  let collectionId: number;
+  let tokenId: number;
+  before(async () => {
+    await usingApi(async () => {
+      alice = privateKey('//Alice');
+      collectionId = await createCollectionExpectSuccess({ mode: { type: 'NFT' } });
+      tokenId = await createItemExpectSuccess(alice, collectionId, 'NFT');
+    });
+  });
+
+  it('execute setVariableMetaData', async () => {
+    await setVariableMetaDataExpectSuccess(alice, collectionId, tokenId, data);
+  });
+
+  it('verify data was set', async () => {
+    await usingApi(async api => {
+      const item: any = await api.query.nft.nftItemList(collectionId, tokenId);
+
+      expect(Array.from(item.VariableData)).to.deep.equal(Array.from(data));
+    });
+  });
+});
+
+describe('Negative Integration Test setVariableMetaData', () => {
+  let data = [1];
+
+  let alice: IKeyringPair;
+  let bob: IKeyringPair;
+
+  let validCollectionId: number;
+  let validTokenId: number;
+
+  before(async () => {
+    await usingApi(async () => {
+      alice = privateKey('//Alice');
+      bob = privateKey('//Bob');
+
+      validCollectionId = await createCollectionExpectSuccess({ mode: { type: 'NFT' } });
+      validTokenId = await createItemExpectSuccess(alice, validCollectionId, 'NFT');
+    });
+  });
+
+  it('fails on not existing collection id', async () => {
+    await usingApi(async api => {
+      let nonExistingCollectionId = await findNotExistingCollection(api);
+      await setVariableMetaDataExpectFailure(alice, nonExistingCollectionId, 1, data);
+    });
+  });
+  it('fails on removed collection id', async () => {
+    const removedCollectionId = await createCollectionExpectSuccess({ mode: { type: 'NFT' } });
+    const removedCollectionTokenId = await createItemExpectSuccess(alice, removedCollectionId, 'NFT');
+
+    await destroyCollectionExpectSuccess(removedCollectionId);
+    await setVariableMetaDataExpectFailure(alice, removedCollectionId, removedCollectionTokenId, data);
+  });
+  it('fails on removed token', async () => {
+    const removedTokenCollectionId = await createCollectionExpectSuccess({ mode: { type: 'NFT' } });
+    const removedTokenId = await createItemExpectSuccess(alice, removedTokenCollectionId, 'NFT');
+    await burnItemExpectSuccess(alice, removedTokenCollectionId, removedTokenId);
+
+    await setVariableMetaDataExpectFailure(alice, removedTokenCollectionId, removedTokenId, data);
+  });
+  it('fails on not existing token', async () => {
+    const nonExistingTokenId = validTokenId + 1;
+
+    await setVariableMetaDataExpectFailure(alice, validCollectionId, nonExistingTokenId, data);
+  });
+  it('fails on too long data', async () => {
+    const tooLongData = new Array(4097).fill(0xff);
+
+    await setVariableMetaDataExpectFailure(alice, validCollectionId, validTokenId, tooLongData);
+  });
+  it('fails on fungible token', async () => {
+    const fungibleCollectionId = await createCollectionExpectSuccess({ mode: { type: 'Fungible', decimalPoints: 0 } });
+    const fungibleTokenId = await createItemExpectSuccess(alice, fungibleCollectionId, 'Fungible');
+
+    await setVariableMetaDataExpectFailure(alice, fungibleCollectionId, fungibleTokenId, data);
+  });
+  it('fails on bad sender', async () => {
+    await setVariableMetaDataExpectFailure(bob, validCollectionId, validTokenId, data);
+  });
+});
--- a/tests/src/util/helpers.ts
+++ b/tests/src/util/helpers.ts
@@ -253,6 +253,12 @@
   return unused;
 }
 
+export async function findNotExistingCollection(api: ApiPromise): Promise<number> {
+  const totalNumber = parseInt((await api.query.nft.createdCollectionCount()).toString(), 10) as unknown as number;
+  const newCollection: number = totalNumber + 1;
+  return newCollection;
+}
+
 function getDestroyResult(events: EventRecord[]): boolean {
   let success: boolean = false;
   events.forEach(({ phase, event: { data, method, section } }) => {
@@ -378,6 +384,23 @@
   });
 }
 
+export async function setVariableMetaDataExpectSuccess(sender: IKeyringPair, collectionId: number, itemId: number, data: number[]) {
+  await usingApi(async (api) => {
+    const tx = api.tx.nft.setVariableMetaData(collectionId, itemId, '0x' + Buffer.from(data).toString('hex'));
+    const events = await submitTransactionAsync(sender, tx);
+    const result = getGenericResult(events);
+
+    expect(result.success).to.be.true;
+  });
+}
+
+export async function setVariableMetaDataExpectFailure(sender: IKeyringPair, collectionId: number, itemId: number, data: number[]) {
+  await usingApi(async (api) => {
+    const tx = api.tx.nft.setVariableMetaData(collectionId, itemId, '0x' + Buffer.from(data).toString('hex'));
+    await expect(submitTransactionExpectFailAsync(sender, tx)).to.be.rejected;
+  });
+}
+
 export interface CreateFungibleData extends Struct {
   readonly value: u128;
 }