react native text input keyboard how to show dot instead of comma?

I have an issue in react-native text input ios and I want to show a numeric keyboard. Here is the code that describes very well:

<TextInput
  keyboardType={'numeric'}
  onChangeText={(setCurrentValue) => this.setState({ setCurrentValue })}
/>  

but in ios shows a comma in the keyboard, as in the picture below:

Instead of that comma I want to show a dot. Somebody have an idea how to do without replace method in JavaScript?

Thank you!