Why can't I change my backgauge from X real position to flange (L) ?

If the program is graphical, the values shown in the numerical bending page are always the X real position, as those values have been calculated in graphical.

If the program is numerical :

    - Go to the user preference page 3

    - Select Show L first set it to yes if you would like to first show the flange (L) when creating a program or to no if you would like to always show the X real position first.

Odoo CMS - a big picture