看资源帖里secede_province是这样用的，但是为什么不行呢
country_event = {
id = 40005
is_triggered_only = yes
title = "香港澳门回归"
desc = "香港澳门回归"
picture = "soviet_politics2"
option = {
name = "香港澳门回归"
5886 = { add_core = CHI }
5868 = { add_core = CHI }
POR = { 5886 = { secede_province = CHI } }
ENG = { 5868 = { secede_province = CHI } }
}
}