Trying to replicate this qlik calculation to tableau.

[yeswanth_tabait]

I am New to qlik and trying to replicate the same calculation to tableau. But I didn't under stand the below Expression. Can any one help me  to understand what exactly this expression doing. I don't know about what Reloadtime is?

sum(
{<SNMONTH={'=MonthStart(SNMONTH) = AddMonths(MonthStart(ReloadTime()), -1)'}>}
IN_MD)

[brunobertels]

Hi 

this formula is calculating this 

the SUM of IN_MD dimension where SNMONTH is equal to the begining of SNMONTH who need ti be equal to the beginning of the last month of the last reloadtime of the application 

relaodtime function is giving the timestamp of the last time the app has been relaoded 

Hope it helps