Planet Modifiers not working for Custom Solar System

[Stargate00001]

I want to add "weak magnetic field" and "mineral rich" to Mars and "hazardous weather" to Earth so I created a mini mod that would add a new Solar System. Everything checks out but I'm having a lot of trouble with adding planetary modifiers.

Here's what my code looks like:

Spoiler: Code

    planet = {
        name = "NAME_Earth"
        class = "pc_ocean"
        orbit_distance = 25
        orbit_angle = 120
        size = 16
        has_ring = no
        entity = "continental_planet_earth2_entity"
        tile_blockers = none
        flags = { planet_earth }
        init_effect = {
            prevent_anomaly = yes
        }
       
        init_effect = {
            add_modifier = {
                modifier = "hazardous_weather"
                days = -1
            }
        }  
       
        planet_modifier = "pm_hazardous_weather"
       
        moon = {
            name = "NAME_Luna"
            class = "pc_barren_cold"
            size = 5
            orbit_distance = 12
            orbit_angle = 40
            has_ring = no
            entity = "cold_barren_planet_luna_entity"
        }
    }
   
    planet = {
        name = "NAME_Mars"
        class = "pc_continental"
        orbit_distance = 25
        orbit_angle = 60
        size = 18
        has_ring = no
        starting_planet = yes
        entity = "green_mars_entity"
        tile_blockers = none
        init_effect = {
            generate_start_buildings_and_blockers = yes
        }
       
        init_effect = {
            add_modifier = {
                modifier = "mineral_rich"
                days = -1
            }
        }
       
        init_effect = {
            add_modifier = {
                modifier = "weak_magnetic_field"
                days = -1
            }
        }
       
        planet_modifier = "pm_mineral_rich"
        planet_modifier = "pm_weak_magnetic_field"
    }

I launched the game earlier with "planet_modifier = "pm_weak_weak_magnetic_field" immediately after the first "init_effect" in the Mars section like so:

Spoiler: Code

   planet = {
        name = "NAME_Mars"
        class = "pc_continental"
        orbit_distance = 25
        orbit_angle = 60
        size = 18
        has_ring = no
        starting_planet = yes
        entity = "green_mars_entity"
        tile_blockers = none
        init_effect = {
            generate_start_buildings_and_blockers = yes
        }
       
        init_effect = {
            add_modifier = {
                modifier = "mineral_rich"
                days = -1
            }
        }

        planet_modifier = "pm_mineral_rich"
       
        init_effect = {
            add_modifier = {
                modifier = "weak_magnetic_field"
                days = -1
            }
        }
       
        planet_modifier = "pm_weak_magnetic_field"
    }

What's odd is that when I launched the game with the bottom block of code, the Hazardous Weather modifier showed up on Earth but none of the modifiers showed up on Mars. When I tried switching to the first block of code (and I only modified the Mars section, didn't touch the Earth section) and relaunched the game, the modifiers weren't showing up on Mars (as before) AND the hazardous weather modifier had been removed from Earth.

I'm really stumped on this one. When I tried launching without the "planet_modifier" lines, the modifiers would show up but wouldn't list an icon, name, effect, or description. I've searched online to see how modifiers are done and I've looked in the planet modifiers file as well as the base prescripted solar system initialization file and I can't find how to do modifiers correctly.

Can someone please help me out here?

 

[Courageous]

I think you may have gotten your answer already, but read through common/on_actions/00_on_actions.txt, and check the various on_game_start, and on_game_start_colony actions. Basically, the game is overwriting some of what you do. IIRC.