movit ROS reflecting transformation in GUI

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Could you help out figuring out how to make Moveit use a close loop? When controlling a robotic arm just by GUI on Moveit , the GUI won’t reflect live update on robotic arm position. from dev: "f I set a pose in Moveit and press send button, my robotic arm goes to that position, however moveit doesn't show present status of the arm, it only output the angle each motor has to move to reach at the required pose"