crashlyticsUploadSymbols with muti apk build_code error - google-fabric

Question

As GooglePlay need 64 bit apk support from 8/1/2019, i Support different CPU architectures with each APK.
For details:
https://developer.android.com/distribute/best-practices/develop/64-bit
https://developer.android.com/google/play/publishing/multiple-apks.html
I followed https://developer.android.com/studio/build/configure-apk-splits.html configure to Build multiple APKs.
So now if armeabi's build_version is 1000, my arm64-v8a's build_version is 1001.
After ./gradlew crashlyticsUploadSymbolsapkxxx
But i found the Build_version all of armeabi and arm64-v8a are 1000.
So I think it's a error ?
Other Info:
classpath 'io.fabric.tools:gradle:1.27.1'
compile('com.crashlytics.sdk.android:crashlytics:2.10.1#aar') {
transitive = true;
}
compile('com.crashlytics.sdk.android:crashlytics-ndk:2.1.0#aar') {
transitive = true;
}
Build multiple APKs configure :
// Map for the version code that gives each ABI a value.
ext.abiCodes = ['armeabi':0, 'arm64-v8a':1]
import com.android.build.OutputFile
android.applicationVariants.all { variant ->
variant.outputs.each { output ->
def baseAbiVersionCode =
project.ext.abiCodes.get(output.getFilter(OutputFile.ABI))
if (baseAbiVersionCode != null) {
output.versionCodeOverride =
baseAbiVersionCode * 1 + variant.versionCode
}
}
}