Get PWM value after overwriting it

Hello,

I am currently writing a Lua Script where I use the function SRV_Channels:set_output_pwm_chan_timeout to overwrite the PWM value of the autopilot. Is it somehow possible to get the desired PWM value, the autopilot wants to set? If I use SRV_channels:get_pwm I am just getting the PWM value that I set myself but what I need is the PWM value that is overwritten.

Thanks in advance