change the ini with the axis interface open

Is there any way to create a button to select two different accelerations? example
my machine has an acceleration of 1000ms2 in the ini file, I want to create a button in the axis interface that when I press it changes the acceleration to 500, so I can work with heavy parts more smoothly without having to change it manually

forum.linuxcnc.org/38-general-linuxcnc-q...eleration-on-the-fly
forum.linuxcnc.org/38-general-linuxcnc-q...ocity-with-g-m-codes
Just add a VCP button, if you need it.

Is there a way to change the acceleration while the program is running? I tried to use m68 to change the acceleration during the program, but the planner ignores the change commands, but when I only run m68 it changes the acceleration as I determine.

Pretty sure it was discussed here recently, have a look at "recent topics" on the forum menu.

 I tried to use m68 to change the acceleration during the program, but the planner ignores the change commands, but when I only run m68 it changes the acceleration as I determine.

Changes to the ini.* halpin values during Gcode execution will only take effect after a 'queuebuster' command (eg 'M66 E0 L0') in the gcode. A queuebuster is a command that stops and reinitializes the interpreter with the current ini.* pin values . M68 alone does not cause such a synchronization.