ARToolKit Android cannot recognize new pattern

Hello everybody i have a question about AR technology!

Exactly with the ARToolKit framework which i have problem. I did everything what is in the tutorial but the application cannot recognize the symbol what i have putted in.

tutorial page: link

what i have create: - pattern file about symbol (filename.patt) and added this to the project under \Data\ - with the mk_patt.exe recognized the image what i would like to be as the source. - modified the source:

markerID = ARToolKit.getInstance().addMarker("single;Data/patt.eslogo;80");

But i don't know what i have to do more. By the way this is an example and with the original source the program working and drawing the cube on the symbol. and the new pattern file is the same style so that is not problem.

Any idea? I did not find useful video what's included the exact method