AJAX numericupdownextender issue in asp.net

[twinscythe12332]

my problem is that I am attempting to create a page with a numericupdownextender. I am creating a kind of time (1am, 2am, 3am... 6pm, etc)so that it goes up and down through it. the problem I am finding is that when I put 1am etc is that it is jumping up in 2s, and doesn't even decrease (like a normal increment should go 1,2,3, this goes 1,3...). the following is just the snippet for the extender: any help would be much appreciated.