3 shunt low side resistor configuration based on VESC 6

Hi, I am planning to design a motor driver based on VESC 6 but I wish to switch the in line current sensing to low side current sensing. May i ask is it possible? Will the current reading be same as in line current sensing? If it is not the same, how can I change the configuration in firmware and if I have different current opamp gain how do I change it in firmware? Thanks