[Eeglablist] Add data channel

[kknaepen]

Dear,

I would like to add four channels from another dataset (which are 
already in a .set file format) to an existing EEG dataset. Both datasets 
are equally long, equal sample rate and synchronized.

I found how to add a new EMPTY channel on a previous message:

EEG.data(end+1,:) = 0;
EEG.nbchan = size(EEG.data,1);
if ~isempty(EEG.chanlocs)
	EEG.chanlocs(end+1).label = '';
end;
[ALLEEG EEG CURRENTSET] = eeg_store(ALLEEG, EEG, CURRENTSET);
eeglab redraw

Could anyone help me change this sript so I could load 4 existing 
channels into another dataset, please?

Thanks,

Kristel