You should bear in mind, when using the hill climb program, that on your bike you will have gears, so when the effort (resistance) increases you will change gear to maintain cadence or stand on the pedals rather than killing yourself trying to spin at massive watts.
Try putting the machine on a constant setting that you can spin comfortably at 85rpm for 60 mins + (aerobic excersise and weight loss) If you want to build up muscle then go onto the Interval (hill program) but as with all exercise it is repetitions that are most effective so 30 mins on a lower level will be much more use than 5 mins killing yourself on level 10!