# env

## Function

Read the user global environment object, or read the user global variable by name.

## Syntax

```bt
env(name)
```

## Parameters

| Parameters | Type | Required | Default value | Description |
| ------ | ------ | ------ | ------ | ------ |
| name | String | No | None | User global variable name. |

## Return value

| Type | Description |
| ------ | ------ |
| Object/Any/Empty | Returns the user global object without parameters; returns the variable value if the name is hit; returns Empty if the name is not hit. |

## Example

```bt
name = 'BT'
result = env('name')

// Output: BT
print result
```

## Notes

- Only read global variables saved by VM, do not scan local variables.