dynamic speed of spindle related to speed of x,y,xy axis speed via pwm

hello friends i have problem to configure spindle  pwm dynamically that relate to speed of x,y,xy axies speed please help to edit the hal and ini file to achieve.first in setpconf wizard i setup pwm and the spindel works but at fixed rate i can add or reduce speed but is manual. 

Sounds like maybe laser intensity setting?
Can you use motion-current-vel?

thanks for reply .but laser has just x and y but my machine is special sewing and has 4 axies xyza and spindle works as needle punch that speed must be dynamicly related to speed of x axies y axies or xy movment speed.

All joint velocities are available in hal, so if the PWM needs to track any function
of these velocities, it's possible, but you need to know the function.

Do you know the actual desired PWM  value vs joint velocity function?
 

hi.Tks for reply .no i dont know actual desired PWM. its not fixed speed