Possible multi backdate in wprobot ?

Hi good morning all,

May you tell me please if it is possible to use multi date in backadate at wpr robot ?

Because there is a line

Backdate Start Date:
exemple today is 2014-09-11
so you have if you want to put Backdate Start Date: 2014-09-11

But if you want exemple to make them for a week you need to open multi windows and for each put different date or can you do exemple like this does it work please

Backdate Start Date: 2014-09-11, 2014-09-12, 2014-09-13

Anybody use it in multi date or you do date 1 by 1 please ?

Thanks a lot for all