How to set progress in range seekbar in android -

i have created range seekbar https://code.google.com/p/range-seek-bar/.now question how set progress in this.

from here

// setup new range seek bar rangeseekbar<integer> rangeseekbar = new rangeseekbar<integer>(this); // set range rangeseekbar.setrangevalues(15, 90); rangeseekbar.setselectedminvalue(20); rangeseekbar.setselectedmaxvalue(88);