# decreaseLiquidity

Decrease specific liquidity from specific pool.

### Signature

`decreaseLiquidity(options: DecreaseLiquidityOptions): Promise<Transaction>`

### Params

```typescript
interface DecreaseLiquidityOptions {
  // pool object ID
  pool: string;
  // liquidity NFT ID
  nft: string;
  // Operator address
  address: string;
  // liquidity delta
  decreaseLiquidity: string | number;
  // Amount of coin A
  amountA: string | number; 
  // Amount of coin B
  amountB: string | number;
  // Acceptable wasted amount percentage. Range: [0, 100)
  slippage: string | number;
  // Expires timeout(ms), defaults 180_000
  deadline?: number;
  // Custom transaction handler
  txb?: Transaction;
}
```

### Examples

```typescript
const turbosSdk = new TurbosSdk(Network.testnet, {
  url: 'https://fullnode.testnet.sui.io',
});
const signer = turbosSdk.account.getKeypairFromMnemonics("your mnemonic");
const poolId = '0x328572f9d3c99bdb0a2da46fa61ef7917e1d35e67ec9472d412aa82b4a5222b2';
const pool = await turbosSdk.pool.getPool(poolId);
const positionId =
  '0x0d367b3a64002124e8021293983be069bfcf81c6f1b905a0ebff693809f526a3';
const position = await turbosSdk.nft.getPositionFields(positionId);
// decrease 50% of the liquidity
const decreaseLiquidity = (Number(position.liquidity) * 0.5).toFixed(0);
const amounts = turbosSdk.pool.getTokenAmountsFromLiquidity({
  currentSqrtPrice: new BN(pool.sqrt_price),
  lowerSqrtPrice: turbosSdk.math.tickIndexToSqrtPriceX64(
    turbosSdk.math.bitsToNumber(position.tick_lower_index.fields.bits),
  ),
  upperSqrtPrice: turbosSdk.math.tickIndexToSqrtPriceX64(
    turbosSdk.math.bitsToNumber(position.tick_upper_index.fields.bits),
  ),
  liquidity: new BN(decreaseLiquidity),
});
console.log(amounts);
const txb = await turbosSdk.pool.decreaseLiquidity({
  pool: poolId,
  nft: positionId,
  decreaseLiquidity,
  amountA: amounts[0].toString(),
  amountB: amounts[1].toString(),
  address: signer.toSuiAddress(),
  slippage: 10, //10% slippage
});
const result = await turbosSdk.provider.signAndExecuteTransaction({
  transaction: txb,
  signer,
});
console.log(result);
```


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