Hi teguh,
I think that the reason why the traveled route does not work for you after editing the record in the sys.txt file and adding the scheme is that you are using the IGO Primo with the diMka skin.

I have IGO Nextgen - Basar 9.18.27.736574 installed. I only use the default skin. I don't use branding.zip.

Consider possibly upgrading IGO Primo to the newer IGO Nextgen, which will allow you more user options. You can find the installation files here on this forum.

Have a great time Monky