> For the complete documentation index, see [llms.txt](https://docs.defisaver.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.defisaver.com/actions/aave-v4/aavev4collateralswitch.md).

# AaveV4CollateralSwitch

### Description

Switch action if user wants to use tokens for collateral on aaveV4 spoke.

### Action ID

`0xba79ba14`

### SDK Action

```ts
const aaveV4CollateralSwitchAction = new dfs.actions.aavev4.AaveV4CollateralSwitchAction(
    spoke,
    onBehalf,
    reserveId,
    useAsCollateral
);
```

### Action Type

`STANDARD_ACTION`

### Input Parameters

```solidity
    /// @param spoke Address of the spoke.
    /// @param onBehalf Address to switch collateral on behalf of. Defaults to the user's wallet if not provided.
    /// @param reserveId Reserve id.
    /// @param useAsCollateral Whether to use the tokens as collateral.
    struct Params {
        address spoke;
        address onBehalf;
        uint256 reserveId;
        bool useAsCollateral;
    }
```

### Return Value

```solidity
return bytes32(0);
```

### Events and Logs

```solidity
emit ActionEvent("AaveV4CollateralSwitch", logData);
logger.logActionDirectEvent("AaveV4CollateralSwitch", logData);
bytes memory logData = abi.encode(params);
```