how to customize a selection list in relation to an academic year??

[#1]

Hi, in my database I have years and months and I would create a list of selections per academic year

for example in my database i have 2012, 2013, 2014 and i would sort from October 2012 to September 2013 and from October 2013 to September 2014 and my list will display 2012/2013, 2013/2014.

how i can do it? thx

[Gysbert_Wassenaar]

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