diff --git a/db.go b/db.go
index 6fc8fbf..d81aaf7 100644
--- a/db.go
+++ b/db.go
@@ -37,7 +37,7 @@ func (m *TransactionDB) close() {
 	m.h = nil //clear it, very important to prevent multiple opening
 }
 
-func (m *TransactionDB) addRequest(r *http.Request) (row LeanworkRequest, err error) {
+func (m *TransactionDB) addRequest(r *http.Request) (row LeanworkIn, err error) {
 	if err = m.conn(Config); err != nil {
 		return row, err
 	}
@@ -45,7 +45,7 @@ func (m *TransactionDB) addRequest(r *http.Request) (row LeanworkRequest, err er
 
 	r.ParseForm()
 	//assuming form has been parsed
-	row = LeanworkRequest{}
+	row = LeanworkIn{}
 	pickupUrl := r.FormValue("pickupUrl")
 	receiveUrl := r.FormValue("receiveUrl")
 	signType := r.FormValue("signType")
@@ -57,7 +57,7 @@ func (m *TransactionDB) addRequest(r *http.Request) (row LeanworkRequest, err er
 	valid := isLeanworkFormValid(r.Form)
 	ip4 := getClientIPLong(r)
 
-	insForm, err := m.h.Prepare("INSERT INTO request(pickupUrl, receiveUrl, signType, orderNo, orderAmount, orderCurrency, customerId, sign, valid, ip4) VALUES(?,?,?,?,?,?,?,?,?,?)")
+	insForm, err := m.h.Prepare("INSERT INTO leanworkIn (pickupUrl, receiveUrl, signType, orderNo, orderAmount, orderCurrency, customerId, sign, valid, ip4) VALUES(?,?,?,?,?,?,?,?,?,?)")
 	if err != nil {
 		log.Printf("Failed to prepare SQL statment for insert")
 		return
@@ -65,7 +65,7 @@ func (m *TransactionDB) addRequest(r *http.Request) (row LeanworkRequest, err er
 
 	res, err := insForm.Exec(pickupUrl, receiveUrl, signType, orderNo, orderAmount, orderCurrency, customerId, sign, valid, ip4)
 	if err != nil {
-		log.Printf("Error inserting leanwork request with orderNo =%s \n", orderNo)
+		log.Printf("Error inserting leanworkIn with orderNo =%s \n", orderNo)
 		return
 	}
 
diff --git a/leanwork_request.go b/leanworkIn.go
similarity index 85%
rename from leanwork_request.go
rename to leanworkIn.go
index 13cbf1d..64bebd7 100644
--- a/leanwork_request.go
+++ b/leanworkIn.go
@@ -5,7 +5,7 @@ import (
 	"time"
 )
 
-type LeanworkRequest struct {
+type LeanworkIn struct {
 	Id            int64
 	PickupUrl     string
 	ReceiveUrl    string
@@ -27,11 +27,11 @@ func lrIsIdMatchSign(id string, sign string) bool {
 	return err == nil
 }
 
-func getRequestRowByIdAndSign(id string, sign string) (row LeanworkRequest, err error) {
+func getRequestRowByIdAndSign(id string, sign string) (row LeanworkIn, err error) {
 	//retrieve form DB
-	row = LeanworkRequest{}
+	row = LeanworkIn{}
 	db.conn(Config)
-	selDB, err := db.h.Query("SELECT * FROM request WHERE id=? and sign=?", id, sign)
+	selDB, err := db.h.Query("SELECT * FROM leanworkIN WHERE id=? and sign=?", id, sign)
 	if err != nil {
 		return
 	}
diff --git a/leanworkOut.go b/leanworkOut.go
new file mode 100644
index 0000000..c9ecbf5
--- /dev/null
+++ b/leanworkOut.go
@@ -0,0 +1,2 @@
+package main
+
diff --git a/purchase.go b/purchase.go
index 9776b56..3b3ce52 100644
--- a/purchase.go
+++ b/purchase.go
@@ -43,13 +43,13 @@ func StartPay(w http.ResponseWriter, r *http.Request) {
 
 }
 
-func askForPaymentSelection(w http.ResponseWriter, row LeanworkRequest) {
+func askForPaymentSelection(w http.ResponseWriter, row LeanworkIn) {
 	t := template.Must(template.ParseFiles("PG/StartPay.html"))
 	//tmpl.ExecuteTemplate(w, "StartPay", row)
 	t.Execute(w, row)
 }
 
-func askForPaymentInfo(w http.ResponseWriter, row LeanworkRequest, rpn_type string) {
+func askForPaymentInfo(w http.ResponseWriter, row LeanworkIn, rpn_type string) {
 	var data struct {
 		Id      int64
 		Sign    string
diff --git a/ref/w.php b/ref/w.php
new file mode 100644
index 0000000..f967ded
--- /dev/null
+++ b/ref/w.php
@@ -0,0 +1,46 @@
+<?php
+$data = array(
+  'order_id'=>'200310160057TW002184000000000001',
+  'order_time'=> date('YmdHis'),
+  'order_amount'=> '120000',
+  'deal_id' => "deal" + date('YmdHis'),
+  'deal_time' => date('YmdHis'),
+  'pay_amount' => '120000',
+  'pay_result' => '3',
+);
+
+
+$params = array();
+foreach ($data as $field => $value) {
+if( $value == '' ) continue;
+	$params[] = "$field=$value";
+}
+$params[] = "key=p1j4A3mEMj+ft0xkSfVULQ"; //must to use your key
+
+$comp = implode('|', $params);
+$data['signature'] = md5(implode('|', $params));
+?>
+
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+</head>
+<body>
+  https://deposit.paylomo.net/pay.php?r=payEasy <br>
+  http://debug.biukop.com:8080/rpn_notify
+	<form id="payment" name="payment" action="http://debug.biukop.com:8080/rpn_notify" method="POST">
+		<?php
+		foreach ($data as $key => $val) {
+       echo '<input type="hidden" name="'.$key.'" value="'.$val.'" />';
+    }
+		?>
+		<input type="submit" value="submit">
+	</form>
+</body>
+<script type="text/javascript">
+	// document.getElementById('payment').submit();
+</script>
+some text
+<?php echo "$comp ------" ?>
+<?php echo $data['signature'] ?>
+</html>
\ No newline at end of file
diff --git a/rpn.go b/rpn.go
index 1110ebe..4b1d397 100644
--- a/rpn.go
+++ b/rpn.go
@@ -19,7 +19,7 @@ func rpnNotify(w http.ResponseWriter, r *http.Request) {
 
 	ro, _ := getRpnOutByOrderId(ri.Order_id)
 	ri.Leanwork = ro.Leanwork
-	ri1, err := ri.add2db() //TODO:check error add
+	_, err = ri.add2db() //TODO:check error add
 	if err != nil {
 		log.Printf("failed to add rpnIn %+v , error is %s", ri, err.Error())
 	}
@@ -56,9 +56,9 @@ func rpnNameAndCard(w http.ResponseWriter, r *http.Request) {
 	ro.Ip4 = getClientIPLong(r)
 	ro.Leanwork = row.Id
 	if rpn_type == "rpnp2p" {
-		ro.buildReqByLeanworkRequestP2P(row, user_name, user_card)
+		ro.buildReqByLeanworkINP2P(row, user_name, user_card)
 	} else {
-		ro.buildReqByLeanworkRequestFAT(row, user_name, user_card)
+		ro.buildReqByLeanworkINFAT(row, user_name, user_card)
 	}
 	//create db record
 	db.addRpnOut(ro)
diff --git a/rpnIn.go b/rpnIn.go
index 55ba14b..0f0735a 100644
--- a/rpnIn.go
+++ b/rpnIn.go
@@ -85,7 +85,7 @@ func (m *RpnIn) add2db() (ret RpnIn, err error) {
 	return
 }
 
-func (m *RpnIn) signature() string {
+func (m *RpnIn) signature() (sig string) {
 	s := "order_id=" + m.Order_id
 	s += "|order_time=" + m.Order_time
 	s += "|order_amount=" + m.Order_amount
@@ -94,7 +94,9 @@ func (m *RpnIn) signature() string {
 	s += "|pay_amount=" + m.Pay_amount
 	s += "|pay_result=" + m.Pay_result
 	s += "|key=" + m.md5key()
-	return md5str(s)
+	sig = md5str(s)
+	//log.Println("signature of rpnIn = " + sig + " using key " + m.md5key())
+	return
 }
 
 func (m *RpnIn) md5key() string {
diff --git a/rpnOut.go b/rpnOut.go
index ca7ca42..b244f5d 100644
--- a/rpnOut.go
+++ b/rpnOut.go
@@ -34,7 +34,7 @@ type RpnOut struct {
 	Ts          mysql.NullTime
 }
 
-func (m *RpnOut) buildReqByLeanworkRequestP2P(row LeanworkRequest, user_name string, user_cardno string) RpnOut {
+func (m *RpnOut) buildReqByLeanworkINP2P(row LeanworkIn, user_name string, user_cardno string) RpnOut {
 
 	m.Version = "1.1"
 	m.Sign_type = "MD5"
@@ -52,7 +52,7 @@ func (m *RpnOut) buildReqByLeanworkRequestP2P(row LeanworkRequest, user_name str
 	return *m
 }
 
-func (m *RpnOut) buildReqByLeanworkRequestFAT(row LeanworkRequest, user_name string, user_cardno string) RpnOut {
+func (m *RpnOut) buildReqByLeanworkINFAT(row LeanworkIn, user_name string, user_cardno string) RpnOut {
 	m.Version = "1.1"
 	m.Sign_type = "MD5"
 	m.Mid = Config.Rpn.MIDFAT
@@ -98,7 +98,7 @@ func (m *RpnOut) encode() string {
 	return s
 }
 
-func (m *RpnOut) sendRedirect(w http.ResponseWriter, row LeanworkRequest) {
+func (m *RpnOut) sendRedirect(w http.ResponseWriter, row LeanworkIn) {
 	//execute redirect
 	m.Url = Config.Rpn.Url
 	tmpl.ExecuteTemplate(w, "rpnCallOutRedirect", *m)