## Update

`ExpressUpdateResponse Express.Update(ExpressUpdateParamsparameters, CancellationTokencancellationToken = default)`

**patch** `/v1/express/{expressCustomerId}`

Updates a customer's properties such as name or other metadata. All fields are optional - only provided fields will be updated.

### Parameters

- `ExpressUpdateParams parameters`

  - `required string expressCustomerID`

    Unique Express customer identifier. Format: cus_{32-hex-chars}

  - `string expressCustomerName`

    Updated name for the Express customer

  - `IReadOnlyDictionary<string, string>? metadata`

    Updated metadata. Pass null to clear all metadata

### Returns

- `class ExpressUpdateResponse:`

  An Express customer entity that groups users and studies

  - `required DateTimeOffset? CreatedAt`

    Timestamp when the Express customer was created

  - `required string ExpressCustomerID`

    Unique Express customer identifier. Format: cus_{32-hex-chars}

  - `required string ExpressCustomerName`

    Name of the Express customer

  - `required Boolean IsActive`

    Whether the Express customer is currently active

  - `required DateTimeOffset? UpdatedAt`

    Timestamp when the Express customer was last updated

  - `required Long UserCount`

    Number of users currently in this Express customer

  - `string CreatedByApiKeyID`

    UUID of the API key used to create this Express customer, for audit tracking

  - `string CreatedByUserID`

    User ID who created this Express customer via dashboard, null if created via API key

  - `IReadOnlyDictionary<string, string> Metadata`

    Custom key-value metadata for the Express customer. Maximum 50 pairs, keys up to 100 chars, values up to 1000 chars

### Example

```csharp
ExpressUpdateParams parameters = new()
{
    ExpressCustomerID = "cus_1234567890abcdef1234567890abcdef"
};

var express = await client.Express.Update(parameters);

Console.WriteLine(express);
```