problem when publishing to /move_base/goal

edit

When i run the following python code the robot will not move:

publisher = rospy.Publisher('/move_base/goal', MoveBaseActionGoal, queue_size=1,latch=True)
move_base_goal = MoveBaseGoal()

move_base_goal.target_pose.pose.position.x = 0.7

move_base_goal.target_pose.pose.orientation.w =1.0

move_base_goal.target_pose.header.frame_id = '/map' 

goal = MoveBaseActionGoal()

goal.goal = move_base_goal

publisher.publish(goal)

But publishing directly to the topic from cmd is working

rostopic pub  /move_base/goal move_base_msgs/MoveBaseActionGoal "header: 
  seq: 2
  stamp: 
    secs: 5727
    nsecs: 677000000
  frame_id: ''
goal_id: 
  stamp: 
    secs: 0
    nsecs:         0
  id: ''
goal: 
  target_pose: 
    header: 
      seq: 2
      stamp: 
        secs: 5727
        nsecs: 677000000
      frame_id: "map"
    pose: 
      position: 
        x: 1.73762495518
        y: -0.54209536314
        z: 0.0
w: 1.0ion:

Can somone explain what i am doing wrong?