Getting date values in DHTMLX Slider

I found your slider online. It is awesome. Very easy to use. I could provide integer maximum and minimum values and work with it. I would like to use different days as my values. is it possible?
Eg: 1-May-2013,2-May-2013 etc… It is an urgent requirement. Can you please help?

Need to specify: are you going to operate within a month?
Or you need some more values, then 31 day of the current month?