I said in posts #7 and #8 not to use a CustomLCN file as these are for providers WITHOUT LCN's.
You need to do this in a CustomMix file in the hacks section. You cannot do this in the normal section if it is a non-indexed channel. If you need to do something in the hacks section you will need to learn some simple coding because "Hacks" is provided for those with the ability to use it and there will only be basic support for this feature.