give_or_update_embezzler_secret_effect

give_or_update_embezzler_secret_effect = {
	# Either try to add a new embezzler secret.
	if = {
		limit = {
			NOT = {
				any_secret = {
					type = secret_embezzler
					secret_target = $TARGET$
				}
			}
		}
		add_secret = {
			type = secret_embezzler
			target = $TARGET$
		}
		random_secret = {
			type = secret_embezzler
			limit = {
				secret_target = $TARGET$
			}
			set_variable = {
				name = embezzlement_stake
				value = $STAKE$
			}
			set_variable = {
				name = embezzlement_stake_half
				value = {
					value = $STAKE$
					multiply = 0.5
				}
			}
		}
	}
	# Or else increment the existing one.
	else = {
		random_secret = {
			type = secret_embezzler
			limit = {
				secret_target = $TARGET$
				has_variable = embezzlement_stake
			}
			change_variable = {
				name = embezzlement_stake
				add = $STAKE$
			}
			change_variable = {
				name = embezzlement_stake_half
				add = {
					value = $STAKE$
					multiply = 0.5
				}
			}
		}
	}
}

As written in game/common/scripted_effects/00_secret_effects.txt.