February issue in gantt

Gantt
#1

When I create a task with date february 29, february 30 or february 31, gantt change to march 1 , march 2 or march 3, dont show a error message, how can I solve that?
Thanks

#2

Hello,
this is the expected behavior of the JavaScript dates. If the ‘day’ part of the date exceeds actual number of days in the month, it goes to the next one, without any error. For example try this in browser console: new Date(2013, 11, 31) and new Date(2013, 11, 32) it should print you
Tue Dec 31 2013 00:00:00
and
Wed Jan 01 2014 00:00:00 respectively