Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Tribute 1 Level 2 or higher monster. Add 1 Tuner Monster from your Graveyard to your hand whose Level is less than or equal to half of the Tributed monster's.
--トラスト・マインド
--Mind Trust
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_TOHAND)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetLabel(0)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	e:SetLabel(100)
	return true
end
function s.filter1(c,e,tp)
	local lv=math.floor(c:GetLevel()/2)
	return lv>0 and Duel.IsExistingTarget(s.filter2,tp,LOCATION_GRAVE,0,1,nil,lv)
end
function s.filter2(c,lv)
	return c:IsLevelBelow(lv) and c:IsType(TYPE_TUNER) and c:IsAbleToHand()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and s.filter2(chkc,e:GetLabel()) end
	if chk==0 then
		if e:GetLabel()~=100 then return false end
		e:SetLabel(0)
		return Duel.CheckReleaseGroupCost(tp,s.filter1,1,false,nil,nil,e,tp)
	end
	local rg=Duel.SelectReleaseGroupCost(tp,s.filter1,1,1,false,nil,nil,e,tp)
	local lv=math.floor(rg:GetFirst():GetLevel()/2)
	e:SetLabel(lv)
	Duel.Release(rg,REASON_COST)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectTarget(tp,s.filter2,tp,LOCATION_GRAVE,0,1,1,nil,lv)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,g,1,0,0)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.SendtoHand(tc,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,tc)
	end
end