Android instant & installable app set different version code

Question

I have an android app with instant feature. I want to set versionCode 1 for instant app and versionCode 1000 for installable app. I have 3 build.gradle for base, installed and instant feature.

base app

    defaultConfig {
    applicationId "com.mypackage"
    minSdkVersion 16
    targetSdkVersion 29
    versionCode = 1
    versionName = '1.0.0'
}

installed app

defaultConfig {
    applicationId "com.mypackage"
    minSdkVersion 16
    targetSdkVersion 29
    versionCode = 1000
    versionName = '1.0.0'
}

instant app

defaultConfig {
    applicationId "com.mypackage"
    minSdkVersion 16
    targetSdkVersion 29
    versionCode = 1
    versionName = '1.0.0'
}

When building android app bundle, I am getting versionCode 1 for both instant & installable version. versionCode is always picked from base variant build.gradle.

How can I set versionCode 1000 for installable version?

I am trying to achieve this as per android documents.

Restart the version codes for the Google Play Instant experience at 1.

Increase the version code of the installable APK by a large number, such as 1000, to ensure that there is enough space for your instant experience's version number to increase.