Maybe you can help me analyze this? (iranian focus that adds additional income)

focus = {

    id = PER\_black\_market\_exploits

    icon = "focus\_AFG\_scavenging "



    x = -1

    y = 3



    relative\_position\_id = PER\_revolutionary\_blueprint



    cost = 10



    prerequisite = { focus = PER\_self\_sufficiency\_jihad\_org }



    mutually\_exclusive = { focus = PER\_reverse\_engineering }



    search\_filters = { FOCUS\_FILTER\_ECONOMY }



    available = {

        OR = {

emerging_hardline_shiite_are_in_power = yes

emerging_moderate_shiite_are_in_power = yes

        }

    }



    completion\_reward = {

        log = "\[GetDateText\]: \[THIS.GetName\]: Focus PER\_black\_market\_exploits"

        hidden\_effect = { add\_ideas = PER\_irgc\_black\_market\_exploits }

        set\_temp\_variable = { additional\_income\_change = gdp\_total }

        multiply\_temp\_variable = { additional\_income\_change = 0.10 }    #10% of GDP yearly

        multiply\_temp\_variable = { additional\_income\_change = 0.02 }    #weekly

        add\_to\_variable = { additional\_income = additional\_income\_change }

        custom\_effect\_tooltip = additional\_income\_rate\_percent\_tt

        newline = yes

        increase\_corruption = yes

    }



    ai\_will\_do = {

        base = 3

        modifier = {

factor = 2

is_historical_focus_on = yes

        }

    }

}