Problem with spawning units via decision?

[NYG1997]

raise_tribal_raiders = {
        is_high_prio = yes
        ai_check_interval = 36
        
        potential = {
            ROOT = {
                OR = {
                    religion = norse_pagan
                    religion = norse_pagan_reformed
                }
                AND = {
                    culture_group = north_germanic
                }
            }
        }
        allow = {
            ROOT = {
                prestige = 25
            }
        }
        effect = {
            ROOT = {
                prestige = -25
                spawn_unit = {
                    province = capital_scope
                    owner = ROOT
                    troops = {
                        light_infantry = { 550 }
                    }
                    cannot_inherit = yes
                    can_toggle_looting = yes
                }
            }
        }
        ai_will_do = {
            factor = 100
        }
    }

whenever i spawn the army in-game they disappear shortly after using them. No idea what is happening honestly or what i did wrong to make them do that. any idea what i should do to fix it within my mod?

 

[NYG1997]

nevermind figured it out. i was missing the second "Troop identifier number" next to the first one. so i needed to add troops = { light_infantry = { 550 550 } }in order to fix the problem.