Thank you for your reply.
I found the code related to default. lua and throttle control code:
name = _('Throttle Up'), combos = combo('Num+'), pressed = iCommandThrottleIncrease, up = iCommandThrottle1Stop, category = { categories.flight_controls, categories.throttle } }, { name = _('Throttle Down'), combos = combo('Num-'), pressed = iCommandThrottleDecrease, up = iCommandThrottle1Stop, category = { categories.flight_controls, categories.throttle } },
The code does not seem to describe the value of throttle increase.
I don't know how to modify it.