webanimator rotate

Im trying to get an image to rotate based on a slider with a value of 1-360

In the slider value changed event I have

Animator1.Rotatez(ImageView1, 0, 0)
Animator1.Rotatez(ImageView1, Slider1.Value, .1)

The image spins crazy, am i doing something wrong (slider is set to livestep)

You should only be rotating by the delta between the last value and the current value.