yaml file path configuration in launch file

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Hi, I am newbie to ROS and want to know ,is it possible to update the launch file parameters in yaml file (through yaml-cpp parser) and configuring yaml path in launch file?

So basically i will have same parameters in both yaml file and launch file. in case if I update the same parameters in yaml file and configure the yaml file path in other launch file then in this case launch will be also getting updated for those parameters updated in yaml file.