Gcode to help level your bed for ender 3

This is a gcode wrote by hand that place the nozzle on 8 points on the bed to help you level it.
just start the gcode, the bed will heat up then the nozzle will go to trhe first corner, place your paper to level your bed and whene you finish leveling this point, press the printer bouton and the nozzle will go to the next point.
the nozzle will go to all four corner and four points on the midle.
youc can modify the gcode to change the temps of the bed if you want.
This gcode is designed fro the Ender 3 but it can work whith any printer whith the same size (235 x 235mm).
(I put a "cube.stl" file juste so I can publish, dont need to download it or print it)