---
id: "E:cAlgo.API.ChartArea.ObjectsUpdated"
kind: "event"
type: "T:cAlgo.API.ChartArea"
url: "https://help.ctrader.com/ctrader-algo/references/Chart/ChartArea/ObjectsUpdated/"
---

> Documentation index for agents: https://help.ctrader.com/ctrader-algo/llms.txt · machine index: https://help.ctrader.com/ctrader-algo/api.json

# ChartArea.ObjectsUpdated

Member of [ChartArea](https://help.ctrader.com/ctrader-algo/references/Chart/ChartArea/index.md).

## ObjectsUpdated

Occurs when one or several chart objects are updated.

Environments: Desktop supported · CLI supported · Cloud supported.

C#:

```csharp
event Action<ChartObjectsUpdatedEventArgs> ObjectsUpdated;
```

Python:

```python
chartArea.ObjectsUpdated += handler  # handler(obj: ChartObjectsUpdatedEventArgs)
```

### Returns

`Action<ChartObjectsUpdatedEventArgs>` — 

### Examples

C#:

```csharp
protected override void OnStart()
{
    Chart.ObjectsUpdated += OnChartObjectsUpdated;
}

private void OnChartObjectsUpdated(ChartObjectsUpdatedEventArgs args)
{
    foreach (var chartObject in args.ChartObjects)
        Print("Object updated: {0}", chartObject.Name);
}
```

Python:

```python
def on_start(self):
    api.Chart.ObjectsUpdated += self.on_chart_objects_updated

def on_chart_objects_updated(self, args):
    for chartObject in args.ChartObjects:
        api.Print(f"Object updated: {chartObject.Name}")
```