ok thank, that can be an idea, but i see for my "month" element in group cycle can be ok, but for the "channel" element in group cycle is not good.
Is possible to filter the value of the group with IF ?
for element "month" in my group cycle:
if MONTH = 01 write 'JAN'
for element "channel" in my group cycle:
if channel = 'ext' write 'prova canale'
In the Group Settings there is an option to add some logic like to create a Calculated Dimension. Click in the Edit button as you can see in the next screenshot:
But maybe the best idea is to create another field in the script with the logic there. Then use this new field as dimension in the cyclic group.