I am using date of birth for search in age ranges from 18 to 70 years. Database field is cb_dob. The field is searchable. But it does not work. Suppose I select range between 18 and 31 then in url it shows like "cb_dob__minval=31%2F12%2F69+18%3A00%3A18&cb_dob__maxval=31%2F12%2F69+18%3A00%3A31" AND on mouse over of page number (<< Start < Prev 1 2 3 4 [5] 6 7 ... 19 Next > End >>) it shows like "cb_dob__minval=31/12/69+18:00:18&cb_dob__maxval=331/12/69+18:00:31"(It is the part of URL)

It should be "cb_dob__minval=18&cb_dob__maxval=31"
How would be it done?
Please help me.