diff --git a/network/mhfpacket/msg_mhf_apply_campaign.go b/network/mhfpacket/msg_mhf_apply_campaign.go
index 6df266f40..8ff93665a 100644
--- a/network/mhfpacket/msg_mhf_apply_campaign.go
+++ b/network/mhfpacket/msg_mhf_apply_campaign.go
@@ -3,6 +3,7 @@ package mhfpacket
 import (
 	"errors"
 	"erupe-ce/common/byteframe"
+	"erupe-ce/common/stringsupport"
 	"erupe-ce/network"
 	"erupe-ce/network/clientctx"
 )
@@ -12,7 +13,7 @@ type MsgMhfApplyCampaign struct {
 	AckHandle   uint32
 	CampaignID  uint32
 	NullPadding uint16 // set as 0 in z2
-	CodeString  []byte
+	CodeString  string
 }
 
 // Opcode returns the ID associated with this packet type.
@@ -25,7 +26,8 @@ func (m *MsgMhfApplyCampaign) Parse(bf *byteframe.ByteFrame, ctx *clientctx.Clie
 	m.AckHandle = bf.ReadUint32()
 	m.CampaignID = bf.ReadUint32()
 	m.NullPadding = bf.ReadUint16()
-	m.CodeString = bf.ReadBytes(16)
+	m.CodeString = stringsupport.SJISToUTF8(bf.ReadNullTerminatedBytes())
+	bf.ReadInt8()
 	return nil
 }
 
diff --git a/schemas/patch-schema/22-campaign.sql b/schemas/patch-schema/22-campaign.sql
index 205fd3718..94fcf2966 100644
--- a/schemas/patch-schema/22-campaign.sql
+++ b/schemas/patch-schema/22-campaign.sql
@@ -58,7 +58,8 @@ CREATE TABLE IF NOT EXISTS public.campaign_category_links (
     id           SERIAL PRIMARY KEY,
     campaign_id INTEGER,
     state INTEGER,
-    character_id INTEGER
+    character_id INTEGER,
+    code TEXT
   );
 
   INSERT INTO public.campaign_state
diff --git a/server/channelserver/handlers_campaign.go b/server/channelserver/handlers_campaign.go
index 929cb2f4c..a38b4a214 100644
--- a/server/channelserver/handlers_campaign.go
+++ b/server/channelserver/handlers_campaign.go
@@ -1,11 +1,14 @@
 package channelserver
 
 import (
+	"database/sql"
 	"erupe-ce/common/byteframe"
 	ps "erupe-ce/common/pascalstring"
 	"erupe-ce/common/stringsupport"
 	_config "erupe-ce/config"
 	"erupe-ce/network/mhfpacket"
+	"fmt"
+	"log"
 	"time"
 )
 
@@ -172,18 +175,25 @@ func handleMsgMhfStateCampaign(s *Session, p mhfpacket.MHFPacket) {
 func handleMsgMhfApplyCampaign(s *Session, p mhfpacket.MHFPacket) {
 	pkt := p.(*mhfpacket.MsgMhfApplyCampaign)
 
-	// Check campaign ID
-	// Check code against campaign list of codes to see if valid....
-	//checkCode(pkt.CodeString,pkt.CampaignID)
+	var result string
 
-	validCode := true
-	if validCode {
-		s.server.db.Exec(`UPDATE public.campaign_state SET state = $3 WHERE campaign_id = $1 AND character_id =$2`, pkt.CampaignID, s.charID, 1)
+	// Query to check if the event code exists in the database
+	err := s.server.db.QueryRow("SELECT code FROM public.campaign_state WHERE code = $1", pkt.CodeString).Scan(&result)
+
+	switch {
+	case err == sql.ErrNoRows:
+		fmt.Println("Event code does not exist in the database.")
+		s.server.db.Exec(`UPDATE public.campaign_state SET state = $3, code = $4 WHERE campaign_id = $1 AND character_id =$2`, pkt.CampaignID, s.charID, 1, pkt.CodeString)
 
 		doAckSimpleSucceed(s, pkt.AckHandle, make([]byte, 4))
-	} else {
+	case err != nil:
+		log.Fatal(err)
+	default:
+		fmt.Printf("Event code '%s' exists in the database.\n", result)
 		doAckSimpleFail(s, pkt.AckHandle, make([]byte, 4))
+
 	}
+
 }
 
 func handleMsgMhfEnumerateItem(s *Session, p mhfpacket.MHFPacket) {
diff --git a/server/channelserver/handlers_quest.go b/server/channelserver/handlers_quest.go
index a9063efc9..f0cc6b40e 100644
--- a/server/channelserver/handlers_quest.go
+++ b/server/channelserver/handlers_quest.go
@@ -275,7 +275,7 @@ func makeEventQuest(s *Session, rows *sql.Rows) ([]byte, error) {
 	}
 	bf.WriteUint8(questType)
 	if questType == 9 {
-		var state int16
+		var state int
 		s.server.db.QueryRow(`SELECT state
 		FROM campaign_state
 		WHERE character_id = $2