I just figure out how to make the sliders actual work, it all had to be done in glade and the answer came after thirty minutes of google searches.

http://tadeboro.blogspot.com/2009/09/glade3-tutorial-4-gtktreeview-data.html

I finally found this site, which told me to set the page_size = 0.00, after I did that and opened TimeLapse again, the sliders worked.