Can't get poseMatrix of constrained bones

how say the title, when try to get the poseMatrix of bone, returns a localMatrix.
i dont know if is a own mistake.

see the .blend - http://cesio.arg.googlepages.com/bug_poseMatrix.blend

What are you expecting to get? A bone’s pose matrix is the transformation of the bone in armature space.

By the way, the “obmatrix” variable passed to your constraint already contains the same values.

poseMatrix
The total transformation of this PoseBone including constraints.

the script above, prints " bone.poseMatrix ", obmatrix is other issue.
I need the total sum transformations of a bone.

i update above script, and found a little issue. poseMatrix works well in ScritpsLinks, but in pycontraints is weird.