APK split in Unity

Hi,

I have a problem with the split feature of Unity. I have developed an App for a client and it has more than 50mb so I can´t upload the entire apk to Google Play. I have seen various tutorials and I followed them without no luck. Some people says that the google plugin doesn't work in Unity versions above 4.2 and I use 4.4.

I have made an App launcher that downloads the apk but it isn´t the perfect solution and I need to implement the split feature.

So please, can anyone tell me or guide me to implement this feature to the project?

Thanks in advace,

--Radikal D.