can't make "Implement own remote commands" feature work

Here is a simple command that should work:

1111 com.android.settings.Settings

because this one works:
am start -n com.android.settings/.Settings

But i allways receive the message “The given activity or service was not found”.

What is wrong ?

My device is samsung galaxy pocket gt-s5300B with android 2.3.6-gingerbread

Thanks in advance,
Helênio