Marlin Gcode macros not registered

Hello.
I'm just writing to confirm that it's not happening only to me.
I'm trying the Gcode macros feature and when I put the macro command (M810) into cura, it's just skipped and not executed.
I've defined the M810 directly in Marlin like this:

#define GCODE_MACROS
#if ENABLED(GCODE_MACROS)
#define GCODE_MACROS_SLOTS 5 // Up to 10 may be used
#define GCODE_MACROS_SLOT_SIZE 50 // Maximum length of a single macro
#define M810 G28|G91|G1 E350 F6000|G1 E30 F200|G90|G0 Z1 F2000|G0 X60 F3000|G0 Z5 F2000
#endif

And here's my Cura start code:

M810; Marlin Macro start code
M104 S{material_print_temperature};Heatup hotend
M140 S{material_bed_temperature};Heatup bed
M109 S{material_print_temperature};Wait for hotend to heat up

Just looking to confirm that it's not just used wrong.

Thank you.

This is not how they work.

"#define M810 G28|G91|G1 E350 F6000|G1 E30 F200|G90|G0 Z1 F2000|G0 X60 F3000|G0 Z5 F2000"
creates a define M810 at compile time only. But M810 is not used anywhere

You have to send M810 G28|G91|G1 E350 F6000|G1 E30 F200|G90|G0 Z1 F2000|G0 X60 F3000|G0 Z5 F2000 then use it with M810 later

If you want it defined always, you might be able to add it to STARTUP_COMMANDS

Just tried to put the code into the startup commands.
Unfortunately it doesn't work, but thanks for the tip.