Add Placeholder

How to add placeholder?
this my code
```
<TextInputMask
      type={'money'}
      value={Amount}
      onChangeText={text => {
        seAmount(text);
      }}
      placeholder="Ex: $500,000"
      options={{
        precision: 0,
        separator: ',',
        delimiter: '.',
        unit: '$ ',
        suffixUnit: '',
      }}
      style={styles.field}
/>
```

