Script Function

[its_rajvir]

Hi Experts,

I have the script mentioned below. Can anyone explain its working please, i am  little confused. 

if Len(Trim('$ (vStartDate)'))=0 then
Let vStartDate = Date(Today());
EndIf

if Len(Trim('$ (vEndDate)'))=0 then
Let vEndDate = Date(Today()+1);
EndIf

Let vStartDate = Date('1/1/2021');

Let vEndDate= Date('30/1/2021');

Thanks in Advance 

Help!

[Gysbert_Wassenaar · Accepted solution]

It doesn't make much sense to me. There are two if blocks that set the variables vStartDate and vEndDate to respectively today's and tomorrows date if those variables didn't have a value already. Ok, that makes sense. But then the next two Let statements simply set those same variables to the 1st and 30st day of january. And so those if blocks are totally useless.