Working with chrom

I am working with C# nuget 1.2.0.1,
Chrome version; 36.0.1985.131
Appium 1.2.0.1
android 4.4.2 nexus 4

after upgrade the chrome to the latest version (automatic update) the appium dosent recognize any object on the chrome
I using those capability
capabilities.SetCapability(“appPackage”, “com.android.chrome”);
capabilities.SetCapability(“appActivity”, “com.android.chrome.Main”);
if I use the flowing capability
capabilities.SetCapability(“browserName”, “Chrome”);
i Cant any chrome browser