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I am aiming to write a bag recording launch script for two same robots with different storage configuration, hence the stored location for the robots will be different.
The robots name are in rosparam. How do I read the publishing /robot_name in a launch script and then do a if statement to change my current recording node .

 <group if="$(eval arg('robot_name') == robot_name_rosparam)">
      <node pkg="rosbag" type="record" args="record -o /directory /topics">
 <group>

Yes, I have done something like that by passing a variable in the launch file.

@Choco93, I did check that answer when I was searching. It is for loading yaml file to set rosparameter. In my case, the

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