how to use next to function and previous function?

[#1]

hi guys ,

i wrote function like this sum({$1}sales) ,this function display all year sales but actually this function display previous year sales. i do not know how  write previous year sales function.please tell me out  how to write function.

Regards:

madhu

[alexandros17]

sum({$ <year={'<$(=year(today()))'}>} sales)

[MK_QSL]

SUM({$<Year = {'$(=Max(Year)-1)'}>}Sales)

[#4]

thanks alessandro

[#5]

Thanks manish

[MK_QSL]

If you have got your answer, please close the thread by selection appropriate answer.

[#7]

how to write forward function?

[#8]

how to write forward function

[MK_QSL]

There is no Forward Function...

[anbu1984]

sum({$ <year={'<$(=year(today())+1)'}>} sales)