# `Twilio.Schemas.UsageTriggerEnumTriggerField`

The field in the [UsageRecord](https://www.twilio.com/docs/usage/api/usage-record) resource that fires the trigger.  Can be: `count`, `usage`, or `price`, as described in the [UsageRecords documentation](https://www.twilio.com/docs/usage/api/usage-record#usage-count-price).

# `t`

```elixir
@type t() :: String.t()
```

# `decode`

```elixir
@spec decode(term()) :: t() | term()
```

Decodes parsed JSON as this type.

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*Consult [api-reference.md](api-reference.md) for complete listing*