Cant get version correct?

Hello, i’m writing an application with reactNative. Trying to display the app version on the one of my screens however the version is wrong. In my app.json its ‘1.0.0’ but when i use the constant ‘Application.nativeApplicationVersion’ it gives me 2.17.2? any help is appreciated!

-also if anyone has any ideas to change the ‘App Version: xxx’ render to maybe like a smaller font please do comment!

This is my app.json

"expo": {
    "name": "Fault Report",
    "slug": "FaultReport",
    "version": "1.0.0",
    "orientation": "portrait",
    "icon": "./assets/icon.png",
    "updates": {
      "fallbackToCacheTimeout": 0
    "assetBundlePatterns": [
    "ios": {
      "bundleIdentifier": "com.jjCob.BCHapp"
    "android": {
      "package": "com.jjCob.BCHapp",
      "versionCode": 1

Here’s where I want to render the version number

function MainStackNavigator() {

  let buildVersion = Application.nativeApplicationVersion;


  return (

    <NavigationContainer >


        <Stack.Screen options={{headerShown: false}} name='Splash' component={Splash} />

        <Stack.Screen name='Home' component={Home} options={{title: 'Scan QR/     ' +'App Version: ' + buildVersion}}/>