Android – Upload failed You need to use a different version code for your APK because you already have one with version code 2

According to this answer How to solve "Your APK's version code needs to be higher than 2." in Google Play's Developer Console? I have just changed the version code from 2 to 3 and it failed to upload the build.

This is my old manifest before I uploaded the apk

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="mypackage name"
    android:installLocation="auto"
    android:versionCode="28"
    android:versionName="1.0028" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />
        .....

here is the new version code which I have to upload on android developer console. See my menifest

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="mypackage name"
    android:installLocation="auto"
    android:versionCode="2"
    android:versionName="2.0001" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />
        ......

I dont know whats the issue. Any help?
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