number of channels

[caterinal1]

Hi there!
I read that the toolbox is designed for at least >64 channels, but I thought that it was possible to run the analyses anyway. I tried to load an EEG file with 19 channels on the swa_SleepScoring window but it didn't work --> NO EEG structure was reported. Could it be that I did something wrong, or do you confirm that at least 64 channels are mandatory?
Thank you