diff --git a/netforce_clinic/layouts/clinic_hd_case_form.xml b/netforce_clinic/layouts/clinic_hd_case_form.xml
index 00037d3..12ee378 100644
--- a/netforce_clinic/layouts/clinic_hd_case_form.xml
+++ b/netforce_clinic/layouts/clinic_hd_case_form.xml
@@ -16,6 +16,7 @@
         <field name="fee_partner_id" span="2" domain="[['type','=','org']]"/>
         <field name="patient_type" span="2"/>
         <field name="cycle_item_id" span="2"/>
+        <field name="req_fee" span="2" readonly="1" invisible="1"/>
     </group>
     <tabs>
         <tab string="General">
@@ -106,16 +107,13 @@
         <tab string="Note">
             <field name="note" nolabel="1"/>
         </tab>
-        <tab string="Complication">
-            <field name="complication" nolabel="1"/>
-        </tab>
     </tabs>
     <foot>
         <button string="Do Treatment" type="success" icon="arrow-right" method="do_treatment" states="draft,waiting_treatment"/>
         <button string="Done" type="success" icon="ok" method="done" states="in_progress"/>
         <button string="Discontinue" type="danger" icon="remove" action="clinic_hd_case_distcont" states="in_progress"/>
-            <!--<button string="Pay" type="success" icon="ok" action="clinic_payment" states="waiting_payment" />-->
-        <button string="Pay" type="success" icon="ok" method="pay" states="completed" />
+        <button string="Request Fee" type="default" icon="arrow-right" states="completed" method="request_fee"  attrs='{"invisible": [["req_fee","=",0]]}'/>
+        <button string="Pay" type="success" icon="ok" method="pay" states="completed" attrs='{"invisible": [["req_fee","=",1]]}'/>
    </foot>
     <related>
         <field name="invoices" click_action="view_invoice">
diff --git a/netforce_clinic/models/hd_case.py b/netforce_clinic/models/hd_case.py
index 31479ff..3614be8 100644
--- a/netforce_clinic/models/hd_case.py
+++ b/netforce_clinic/models/hd_case.py
@@ -120,6 +120,7 @@ class HDCase(Model):
         'nu': fields.Char("N/U"),
         "invoice_policy": fields.Selection([("fee","Only Fee"),("fee_mdc","Fee & Medicine")],"Government pay for:"),
         "invoice_option": fields.Selection([("fee_mdc_plus","Combine Fee & Medicine"),("fee_mdc_split","Split Fee & Medicine")],"Invoice:"),
+        'req_fee': fields.Integer("Request Expense"),
     }
 
     def _get_number(self,context={}):
@@ -151,6 +152,7 @@ class HDCase(Model):
         'fee_paid': False,
         'invoice_option': 'fee',
         'invoice_policy': 'fee',
+        'req_fee': 0,
     }
     _order="date desc,number desc"
 
@@ -377,6 +379,10 @@ class HDCase(Model):
         if not uom:
             raise Exception("Unit not found in uom")
         obj=self.browse(ids[0])
+        if obj.invoices:
+            for inv in obj.invoices:
+                inv.void()
+
         due_date=obj.date[0:10] # XXX
         # cash, credit
         make_invoice=context.get('make_invoice',True)
@@ -737,19 +743,27 @@ class HDCase(Model):
             },
         }
     
-    def pay(self,ids,context={}):
+    def request_fee(self,ids,context={}):
         obj=self.browse(ids)[0]
-        if not obj.amount:
-            obj.update_usetime()
-            if not obj.amount:
-                obj.complete()
-        else:
-            return {
-                'next': {
-                    'name': 'clinic_payment',
-                    'refer_id': ids[0], #XXX
-                }
+        obj.update_usetime()
+        #if not obj.amount:
+        obj.complete()
+        # send some message to anyboby: patient
+        return {
+            'next': {
+                'name': 'clinic_hd_case',
+                'mode': 'form',
+                'active_id': obj.id,
             }
+        }
+
+    def pay(self,ids,context={}):
+        return {
+            'next': {
+                'name': 'clinic_payment',
+                'refer_id': ids[0], #XXX
+            }
+        }
 
     def done(self,ids,context={}):
         obj=self.browse(ids)[0]
@@ -933,6 +947,10 @@ class HDCase(Model):
         # when change patient
         #vals=self.get_staff_fee(vals,patient_id)
         vals=self.get_invoice_policy(vals,patient_id)
+        # if not other expense request fee
+        obj=self.browse(ids)[0]
+        if not obj.amount:
+            vals['req_fee']=1
         super().write(ids,vals,**kw)
 
     def approve(self,ids,context={}):
diff --git a/netforce_clinic/models/import_payment.py b/netforce_clinic/models/import_payment.py
index 420805b..cab9b77 100644
--- a/netforce_clinic/models/import_payment.py
+++ b/netforce_clinic/models/import_payment.py
@@ -161,8 +161,8 @@ class ImportPayment(Model):
         return ''.join(h for h in hn if h.isdigit())
 
     def import_payment_pks(self,ids,context={}):
-        fmt='%Y-%m-%d %H:%M:%S'
-        start_time=time.strftime(fmt)
+        #fmt='%Y-%m-%d %H:%M:%S'
+        #start_time=time.strftime(fmt)
         obj=self.browse(ids)[0]
         fname=obj.file
         fpath=get_file_path(fname)
diff --git a/netforce_clinic/todo.txt b/netforce_clinic/todo.txt
index 1557a7b..e19135d 100644
--- a/netforce_clinic/todo.txt
+++ b/netforce_clinic/todo.txt
@@ -2,7 +2,8 @@
 - matching 
 - report expense
 -- cost nurse / doctor
-
+-XXXX
+- reqeust fee again after request
 
 - missing 
     - import schedule -> wait K. Ekk