[Koha] Advanced Pattern for Serials Help

[Nicole Engard]

I have this serial that comes every other month and is number like
this Vol 1 Num 1/2, Vol 1 Num 3/4.  I have this pattern in place, but
it's not quite working.

See the screenshots here: http://screencast.com/t/exxF7ekCw

And the pattern I used is here:

Values for X
Add : 1
once every: 6
other values should be ok

Values for Y
Add : 2
oncer every : 1
When more than 12
Set back to 1

Values for Z
Add : 2
oncer every : 1
When more than 12
Set back to: 2


Any ideas on this? I've been working on it for ages now and have had
no luck - I don't know why it's not working.

Thanks in advance!

Nicole