diff --git a/netforce_clinic/layouts/clinic_hd_case_form.xml b/netforce_clinic/layouts/clinic_hd_case_form.xml
index bdfe437..6074ccd 100644
--- a/netforce_clinic/layouts/clinic_hd_case_form.xml
+++ b/netforce_clinic/layouts/clinic_hd_case_form.xml
@@ -36,14 +36,13 @@
                 <field name="hd_acc" span="2"/>
                 <field name="date" invisible="1" span="2"/>
                 <newline/>
-                <field name="wt_start" span="2" attrs='{"required":[["state","=","waiting_treatment"]]}'/>
-                <field name="wt_stop" span="2"/>
+                <field name="wt_start" onchange="onchange_weight" attrs='{"required":[["state","=","waiting_treatment"]]}' span="2"/>
+                <field name="wt_stop" onchange="onchange_weight" span="2"/>
                 <field name="hct" span="2" onchange="onchange_hct" attrs='{"invisible":[["hct_include","=",false]],"required": [["hct_include","=", true]]}'/>
                 <field name="hct_msg" span="4" readonly="1" attrs='{"invisible":[["hct_include","=",false]]}'/>
                 <newline/>
                 <field name="bp_start" span="2"/>
                 <field name="bp_stop" span="2"/>
-                <!--<field name="membrane_type" span="2" />-->
                 <field name="bid_flow_rate" span="2"/>
                 <field name="ultrafittration" span="2"/>
                 <field name="dialyzers" nolabel="1" attrs='{"readonly":[["state","=","completed"]]}'>
diff --git a/netforce_clinic/models/hd_case.py b/netforce_clinic/models/hd_case.py
index d289ab8..f55ad23 100644
--- a/netforce_clinic/models/hd_case.py
+++ b/netforce_clinic/models/hd_case.py
@@ -460,6 +460,9 @@ class HDCase(Model):
 
     def cancelled(self,ids,context={}):
         obj=self.browse(ids)[0]
+        obj.sickbed_id.write({
+            'available': True,
+        })
         obj.write({"state":"cancelled"})
 
     def make_invoices(self,ids,context={}):
@@ -912,6 +915,10 @@ class HDCase(Model):
         obj.write({
             'state': state,
         })
+        # update sickbed
+        obj.sickbed_id.write({
+            'available': False,
+        })
 
         return {
             'next': {
@@ -967,7 +974,7 @@ class HDCase(Model):
             'nurse_id': nurse_id,
         })
         obj.sickbed_id.write({
-            'state': 'available',
+            'available': True,
         })
         set_active_user(user_id)
         return {
@@ -1383,7 +1390,7 @@ class HDCase(Model):
             if vals['sickbed_id']!=obj.sickbed_id.id and obj.state!='draft':
                 if obj.sickbed_id:
                     obj.sickbed_id.write({
-                        'state': 'available',
+                        'available': True,
                     })
                 sb=get_model("clinic.sickbed").browse(vals['sickbed_id'])
                 sb.write({
@@ -1429,6 +1436,13 @@ class HDCase(Model):
         data['duration']=cycle.duration
         return data
     
+    def onchange_weight(self,context={}):
+        data=context['data']
+        wt_stop=data['wt_stop'] or 0
+        wt_start=data['wt_start'] or 0
+        data['ultrafittration']=wt_stop-wt_start
+        return data
+
     def new_shop(self,ids,context={}):
         return {
             'next': {
diff --git a/netforce_clinic/models/hd_case_popup_discontinue.py b/netforce_clinic/models/hd_case_popup_discontinue.py
index e0e6a10..e5c901f 100644
--- a/netforce_clinic/models/hd_case_popup_discontinue.py
+++ b/netforce_clinic/models/hd_case_popup_discontinue.py
@@ -53,7 +53,9 @@ class HDCasePopupDiscontinue(Model):
             'note': obj.note,
             'state': 'cancelled',
         })
-
+        hd_case.sickbed_id.write({
+            'available': True,
+        })
         prod_ids=[]
         for line in obj.lines:
             prod=line.product_id