Proper use of paramsaver

hi
I have a spinbox pyvcp and I would like to save and load the value every time I turn off and turn on LinuxCNC. I saw that I could do with paramsaver but I can not figure out how to use it.
some more information?
regards
Alessandro

There is a sample configuration here: www.mgware.co.uk/LinuxCNC/param-saver.html

But I imagine that is where you got it from?

yes
exactly where I need to put
"loadusr -W paramsaver f=NNN s=NNN b=NNN filename=xxxxxxx onstart=0/1 onexit=0/1 " ?

In the HAL file. Like the example in the HAL file on that page.

hi
another question:
i need to write a variable eg. #35 into pyvcp spinbox halpin vistoll
i tried with file ini mdi_command so when i push a button execute :

MDI_COMMAND = #<_hal[pyvcp.vistoll]> = #35
but it's wrong seem i read halpin but i does not write.

when i read with another button it's ok
MDI_COMMAND = #35=#<_hal[pyvcp.vistoll]>

Is there a solution ?
regards
Alessandro

G-code access to HAL is read-only.

If you need to pass a value from G-code to HAL use the motion.analog-out pins and M68.

linuxcnc.org/docs/2.7/html/gcode/m-code.html#mcode:m68