access EnvMap ClipEnd and ClipSta values via python?

Hello i try access and set the EnvMap ClipEnd and ClipSta values at the Envmap panel via python but is seems not pssible, or may i miss something?

here just would like set the Anim button at Envmap panel and it not work too.

blend file


from Blender import Texture,Image,Material

texture = Texture.Get('envi')

myEnvMap = texture.setType('EnvMap')

setPanel = myEnvMap.setSType('ENV_ANIM')

python doc link