Is it possible to add a variable time to special projects?

[Pancakelord]

So I'm trying to make first contact longer, and whilst I could just increase the cost, or pick a large number of days, that doesnt feel right if you encounter more aliens later in the game and already understand lots about languages. Also, I dont like locking up society research with special projects for ages. Time makes more sense (decoding alien languages would probably involve a multi-disciplinary approach anyway).

The wiki stipulates that the day or cost component of the project must be an integer, but does anything preclude it from being a nested integer?

I.e. the special project could take 5 years to complete the first time, or if it sees you have a flag, that time drops to 2 years.​

    days_to_research = {
                        if = {
                            limit = { has_flag = decoded_a_xeno_language } days = 720
                            else_if = { days = 1800 }
                            }
                        }

Spoiler: First contact event

# First Contact

    #days     = 1800    #5 Years to decode 1st alien language
    #days2    = 720    #2 years to decode 2nd+ alien language

special_project = {
    key = "ESTABLISH_COMMUNICATIONS"
    picture = GFX_evt_star_chart
    icon = "gfx/interface/icons/situation_log/situation_log_radar.dds"
    #cost = 500            No more Soc cost.
    sound = no
    tech_department = society_technology
    days_to_research = {
    if = {
        limit = { has_flag = has_decoded_a_xeno_language } days = 720
        else_if = { days = 1800 }
        }
    }
  
    location = no
    timelimit = -1
    AI_wait_days = {
        weight = 80
        modifier = {
            weight = 30
            has_ethic = ethic_fanatic_xenophile
        }
        modifier = {
            weight = 40
            has_ethic = ethic_xenophile
        }
        modifier = {
            weight = 120
            has_ethic = ethic_xenophobe
        }
        modifier = {
            weight = 130
            has_ethic = ethic_fanatic_xenophobe
        }
        modifier = {
            weight = 1000
            NOT = { has_technology = tech_colonization_1 }
        }
        # these are just to add some variance so all AIs don't do it at the same time
        modifier = {
            factor = 0.95
            OR = {
                has_ethic = ethic_egalitarian
                has_ethic = ethic_fanatic_egalitarian
            }
        }
        modifier = {
            factor = 1.1
            OR = {
                has_ethic = ethic_authoritarian
                has_ethic = ethic_fanatic_authoritarian
            }
        }
        modifier = {
            factor = 0.9
            OR = {
                has_ethic = ethic_spiritualist
                has_ethic = ethic_fanatic_spiritualist
            }
        }
        modifier = {
            factor = 1.15
            OR = {
                has_ethic = ethic_materialist
                has_ethic = ethic_fanatic_materialist
            }
        }
        modifier = {
            factor = 0.85
            OR = {
                has_ethic = ethic_pacifist
                has_ethic = ethic_fanatic_pacifist
            }
        }
        modifier = {
            factor = 1.25
            OR = {
                has_ethic = ethic_militarist
                has_ethic = ethic_fanatic_militarist
            }
        }         
    }

    event_scope = planet_event

    requirements = {
        #shipclass_science_ship = 1
        #leader = scientist
        ##skill = 3
    }

    abort_trigger = {
        OR = {
            NOT = { exists = FROMFROM }
            has_communications = FROMFROM
        }
    }

    on_success = {
        owner = { establish_communications = FROM }
        FROM = {
            set_country_flag = has_communications@root.owner
            set_country_flag = decoded_a_xeno_language        #Added
        }
    }

    on_fail = {
    }
}