> For the complete documentation index, see [llms.txt](https://docs.zk.link/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zk.link/developer/sdk/changelog-2/transactions/10-update-global-var.md).

# UpdateGlobalVar

### type ContractPrice

```dart
ContractPrice(
    int pairId,
    String marketPrice,
)
```

**input:**

* pairId: The contract pair id defined by zkLink.
* marketPrice: The market price of the contract pair

### type SpotPriceInfo

```dart
SpotPriceInfo(
    int tokenId,
    String price,
)
```

**input:**

* tokenId: The token id defined by zkLink.
* price: The spot price of the token.

### type FundingInfo

```dart
FundingInfo(
    int pairId,
    String price,
	int fundingRate,
)
```

### type Parameter

The [Parameter](/developer/api-and-sdk/transaction/update_global_var.md) struct of [UpdateGlobalVar](#type-updateglobalvar).

#### func insuranceFundAccount

```dart
insuranceFundAccount(int accountId)
```

#### func feeAccount

```dart
feeAccount(int accountId)
```

#### func marginInfo

```dart
marginInfo(
	int marginId,
	String? symbol,
	int tokenId,
	int ratio,
)
```

#### func contractInfo

```dart
contractInfo(
	int pairId,
    String symbol,
	int initialMarginRate,
	int maintenanceMarginRate,
)
```

#### func feeAccount

```dart
feeAccount(int accountId)
```

#### func fundingInfos

```dart
fundingInfos(List<FundingInfo> infos)
```

### type UpdateGlobalVar

[UpdateGlobalVar](/developer/api-and-sdk/transaction/update_global_var.md) transaction type.

```dart
UpdateGlobalVar(
    int fromChainId,
	int subAccountId,
	Parameter parameter,
	double serialId,
)
```

#### func toJson

```dart
String toJson()
```

Get the json str of [UpdateGlobalVar](#type-updateglobalvar)

#### Example

```dart
var tx = UpdateGlobalVar(
	fromChainId: 1,
	subAccountId: 2,
	parameter: Parameter.feeAccount(accountId: 8),
	serialId: 101
);
print(tx.toJson());
```