---
id: "M:cAlgo.API.PendingOrder.ModifyVolume(System.Double)"
kind: "method"
type: "T:cAlgo.API.PendingOrder"
url: "https://help.ctrader.com/ctrader-algo/references/Trading/Orders/PendingOrder/ModifyVolume/"
---

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

# PendingOrder.ModifyVolume

Member of [PendingOrder](https://help.ctrader.com/ctrader-algo/references/Trading/Orders/PendingOrder/index.md).

## ModifyVolume(double volume)

Shortcut for Robot.ModifyPendingOrder method to change VolumeInUnits

Environments: Desktop supported · CLI supported · Cloud supported.

C#:

```csharp
TradeResult ModifyVolume(double volume)
```

Python:

```python
pendingOrder.ModifyVolume(volume: float) -> TradeResult
```

### Parameters

- `volume` (`double`, Python `float`): New Volume in Units

### Returns

`TradeResult` — 

### Examples

C#:

```csharp
foreach (var order in PendingOrders)
{
    var result = order.ModifyVolume(20000);
    Print("Order {0} volume modified: {1}", order.Id, result.IsSuccessful);
}
```

Python:

```python
for order in api.PendingOrders:
    result = order.ModifyVolume(20000)
    api.Print(f"Order {order.Id} volume modified: {result.IsSuccessful}")
```