Select previous field and advanced

[#1]

I have a field with all want to create two months earlier and advanced buttons, when clicked the advanced select the month ahead and select the previous month later selected as the QlikView can do that please?

[Jason_Michaelides]

So if you currently have January selected you want a button to select the previous month (December) and one to select the next month (March)?

[Jason_Michaelides]

I meant February for the next month!

[#4]

yes