2(2)-1);
0157         cur_zone2 = strmatch(cur_zone2, handles.zone_names,<span class="string">'exact'</span>);
0158         cur_seg1 = var1(u1(2)+1:end);
0159         cur_seg1 = strmatch(cur_seg1, handles.zone{cur_zone1}.seg_label,<span class="string">'exact'</span>);
0160         cur_seg2 = var2(u2(2)+1:end);
0161         cur_seg2 = strmatch(cur_seg2, handles.zone{cur_zone2}.seg_label,<span class="string">'exact'</span>);
0162         cur_var1 = var1(1:strfind(var1,<span class="string">'_'</span>)-1);
0163