Coordinates goes to default after change and are negative

[artcord (Hugo Pires)]

Hi.
Need help if possible.
I have a laser machine with negative coordinates and not the right ones.
The working area are X=440 and Y=360.
I go to Laser Grbl to change the $130 and $131 and I can edit it and see with the $$ they are stored but when I open Lightburn the coordinates still the original value and in negative mode.
Seems like the machine goes to the factory default values which is -1500 in both axes and also seems Lightburn can’t write in the grbl settings.
There’s some pictures of the diferent settings I have.

Manny thanks for your help.

[berainlb (PY)]

You likely have not written the changes to the controller on LaserGRBL and are looking at a cached list.

Is there a reason why you’re trying to use both programs to do this?

You can also change these settings from LightBurn by going to Edit->Machine Settings.

I suggest you take a backup of your current configuration before proceeding.

You can also do this from console:

$130=440
$131=360

Your negative coordinates will require an offset to fix:. This is what it should be after you fix the working size:

G10 L2 P1 X-440 Y-360
$10=0

You can read about how this works here:
Common Grbl Setups - LightBurn Software Documentation