How to change velocity & acceleration in MotionPlanRequest topic

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The move_group node advertises a "/plan_kinematic_path" service which takes in moveit_msgs/GetMotionPlan service request. You just need to populate the request message with you plan details (including velocity and acceleration scaling) and call the service. There are some useful utility functions that can be used to populate the MotionPlanRequest.msg fields.

I want to use set_max_acceleration_scaling_factor in my python program to control the velocity but I get:

  File "./nextage_moveit_waypoint.py", line 117, in main
    larm.set_max_velocity_scaling_factor(0.5)   
AttributeError: 'MoveGroupCommander' object has no attribute 'set_max_velocity_scaling_factor'

running this : rosversion moveit_commander gives me this: 0.6.1

I tried to do update with sudo apt-get install ros-indigo-moveit-full-pr2 (or sudo apt-get install ros-indigo-moveit) source /opt/ros/indigo/setup.bash

but at the end, rosversion moveit_commander returns me the same version.

How I can update my moveit_commander and make sure that I have set_max_acceleration_scaling_factor