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# Channel Mask Node
## Description
Masks values of input **In** on channels selected in dropdown **Channels**. Outputs a vector of the same length as the input vector but with the selected channels set to 0. Channels available in the dropdown **Channels** will represent the amount of channels present in input **In**.
## Ports
| Name | Direction | Type | Binding | Description |
|:------------ |:-------------|:-----|:---|:---|
| In | Input | Dynamic Vector | None | Input value |
| Out | Output | Dynamic Vector | None | Output value |
## Controls
| Name | Type | Options | Description |
|:------------ |:-------------|:-----|:---|
| Channels | Mask Dropdown | Dynamic | Selects any number of channels to mask |
## Generated Code Example
The following example code represents one possible outcome of this node.
```
void Unity_ChannelMask_RedGreen_float4(float4 In, out float4 Out)
{
Out = float4(0, 0, In.b, In.a);
}
```