aiming animation won't work properly!.

I’m using blender 2.59. for some reason I won’t use 2.63. in this .blend :
the aiming and stay animation won’t work properly. but I think if the priority of the action ( AimUpDown )
set to 1 and turn 0 when the ( aim ) Property turn 15 and back to 1 when the ( aim ) Property turn under 15 ( 14 to 1 ) it work fine.the problem is I don’t know how do that. if there is a way to do it or another way to fix this problem please help me!.if you know how fix it in blender 2.59 upload the fixed .blend file. thanks in advance!

maybe you can set it to 1 and turn it 0 using python!

you haven’t an idea