Logstash Timestamp date field filter not parsing properly

Elastic Stack Logstash
3

Thanks magnus,

If you see the above screenshot which is showing today's date i mean current date but for me it should show IIS logs date

I was trying to import 1st January 2017 logs so the index should be weblogs-2107.01.01 and also for next day import it should create next index as weblogs-2017.01.02 and so on.