Error fix

global runLoop is true.

function main {
    local desiredSpeed is 5.

    until not runLoop {
        if (abs(ship:velocity:surface:mag - desiredSpeed) > 1.0) {
            set throttle to 0.
            wait 1.
            set throttle to 0.5.
            wait 1.
            if (abs(ship:velocity:surface:mag - desiredSpeed) < 1.0) {
                set throttle to 1.
            } else {
                set throttle to 0.
                print "Wheel slip error! Unable to fix."
            }
        }

        wait 0.1.
    }
}

function stopLoop {
    set runLoop to false.
}

run main.