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# graphprototype.update

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### Description

`object graphprototype.update(object/array graphPrototypes)`

This method allows to update existing graph prototypes.

::: noteclassic
This method is only available to *Admin* and *Super admin*
user types. Permissions to call the method can be revoked in user role
settings. See [User
roles](/manual/web_interface/frontend_sections/users/user_roles)
for more information.
:::

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### Parameters

`(object/array)` Graph prototype properties to be updated.

The `graphid` property must be defined for each graph prototype, all
other properties are optional. Only the passed properties will be
updated, all others will remain unchanged.

Additionally to the [standard graph prototype
properties](object#graph-prototype), the method accepts the following
parameters.

|Parameter|[Type](/manual/api/reference_commentary#data-types)|Description|
|--|--|------|
|gitems|array|[Graph items](/manual/api/reference/graphitem/object) to replace existing graph items. If a graph item has the `gitemid` property defined it will be updated, otherwise a new graph item will be created.|

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### Return values

`(object)` Returns an object containing the IDs of the updated graph
prototypes under the `graphids` property.

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### Examples

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#### Changing the size of a graph prototype

Change the size of a graph prototype to 1100 to 400 pixels.

[Request](/manual/api#performing-requests):

```json
{
    "jsonrpc": "2.0",
    "method": "graphprototype.update",
    "params": {
        "graphid": "439",
        "width": 1100,
        "height": 400
    },
    "id": 1
}
```

Response:

```json
{
    "jsonrpc": "2.0",
    "result": {
        "graphids": [
            "439"
        ]
    },
    "id": 1
}
```

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### Source

CGraphPrototype::update() in
*ui/include/classes/api/services/CGraphPrototype.php*.

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