Search Form with Date Range

Search Form with Date Range

I am creating a Stateless form with two date fields to search Start Date and end Date.  I am using the follwoing OpenUrl Task. 

openUrl("https://creator.zoho.com/appowner/AppName/#View::Task_View?Start_Date= input.Start_Date;input.End_Date&Start_Date_op=58", "Same window");

When I submit the form I get all the records in the view with a message " invalid date format" 

What am I doing wrong.  any help will be very much appreciated.