Don't store them all in one line. Use NICK!N as the item name where NICK is the nick and N is the Nth line of nickname.. Loop over %i=1 to N to get all the lines.
Alternatively you can make the itemname NICK.AKANICK (like argv[0].argv[1]) so you could loop over $hfind of all items with argv[0].* to get the AKA nicks like that.
You wouldnt be able to list all the nicks in one line even if you made either of these changes, though, so at some point they'd have to be split into multiple lines.
