SharePoint Workflow not trigger when Checked Item Created

Question

I written Workflow in SharePoint Designer, It works fine when i Checked all Start options i.e.

 

1. Allow this workflow to be manually started

2. Start workflow automatically when item is created

3.  Start workflow automatically when item is created

 

 

  but when i unchecked third checkbox i.e Start workflow automatically when item is created

 Workflow can't start automatically when  item is created

 

 

 

 

Thanks in Advance