Running activity from remote service

Question

iam trying to run an activity from diffrent package from my remote service: this is how i implement the service.java

  public class CurrencyService extends Service
  {
    public class CurrencyServiceImpl extends ICurrencyService.Stub
    {

    int CALL_PUSH_SERVICE_ACTIVITY=10;


    @Override
    public void callSomeActivity(int activityId) throws RemoteException
    {
            Intent pushActivity=new Intent("com.pushservice.PushActivity");
            pushActivity.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

            startActivity(pushActivity);
     }
     .....

}

ive also added a line in the manifest of the service:

the service works fine, but i cant run the activity -> PushActivity which is in diffrent package of diffrent application, this is the error:

Activity not found Exception: No Activity found to handle Intent {act=com.pushservice.PushServiceActivity flq=0x10 ...

thanks.