why we use num here

[soniasweety]

Hi all,

I have a doubt like  in my script I have field

MonthName("Month") as           Test_Month,

    num(MonthName("Month"))   as  Test_MonthNo,

in front end expression:

we are using like below.

Count({<Test_MonthNo= {$(=max(Test_MonthNo))}>}ID)

so instead of month why we are using Test_monthno ?

is there any specific reason?  can anyone explain bit on this?

Thanks

Sony

[soniasweety]

Nice explanation rob