Change default detection range value on velocity_set node

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I'd like to change the default value for the detection range when launching the velocity_set node. However, there is no args for this in the velocity_set.launch. I can change it dynamically through the autoware GUI, but I'd like to have it automatized.

The parameter seems to be defined in src/autoware/utilities/runtime_manager/scripts/computing.yaml. Do I have to change it there and re-build autoware every time I want to change the default value? Or is there some 'runtime' solution?

System: Ubuntu 16.04, Autoware 1.12, ROS Kinetic

Thank you in advance.