problems with a custom event

[zArngrime]

Hello, i have created a custom ringworld system, but i cannot get this event to fire at all.

it should fire once when the game starts the country that controlls it. the system spawns correctly with the flag.

namespace = special_ringworld_e
country_event = {
    id = special_ringworld_e.1
    title = OK
    desc = OK   
    hide_window = yes
   
    mean_time_to_happen = {
        months = 1
    }
   
    trigger = {
        not = { has_country_flag = special-ringworld-tech-ships }
        }   
        capital_scope = {
            solar_system = {
                has_star_flag = special_ringworld_system
            }
        }
    }
   
    immediate = {
        set_country_flag = special-ringworld-tech-ships
        
        capital_scope = {
            create_fleet = { }
            last_created_fleet = {
                set_owner = ROOT
                create_ship = {    name = random design = "Avatar" graphical_culture = "fallen_empire_01" }
                create_ship = { name = random design = "Eclipse" graphical_culture = "fallen_empire_01" }
                create_ship = { name = random design = "Eclipse" graphical_culture = "fallen_empire_01" }               
                set_location = { target = PREV distance = 45 angle = random }
            }
        }
    }
}