gogo:set-output-port-power

gogo:set-output-port-power power-level

power-level is a number between 0 and 100, reflecting the percentage of maximum power. Sets the amount of power that will be fed to the output ports indicated in talk-to-output-ports. This will not affect the on-off state of the output ports. So, for example, if a motor is already connected to an output port and running, changing its power will change its speed. If the motor is not running, changing the power level will not turn it on; instead, it will affect the speed at which the motor starts when it is turned on with output-port-on.