diff --git a/src/views/invalid/InvalidDemo.vue b/src/views/invalid/InvalidDemo.vue
index cb1191a59..4d423c984 100644
--- a/src/views/invalid/InvalidDemo.vue
+++ b/src/views/invalid/InvalidDemo.vue
@@ -29,6 +29,10 @@
                     <div class="p-field p-col-12 p-md-4">
                         <InputNumber id="inputnumber" v-model="value6" placeholder="InputNumber" class="p-invalid" />
                     </div>
+                    <div class="p-field p-col-12 p-md-4">
+                        <CascadeSelect v-model="selectedCity" :options="cascadeCountries" optionLabel="cname" optionGroupLabel="name"
+                            :optionGroupChildren="['states', 'cities']" placeholder="CascadeSelect" class="p-invalid" />
+                    </div>
                     <div class="p-field p-col-12 p-md-4">
                         <Dropdown id="dropdown" v-model="value7" :options="cities" optionLabel="name" placeholder="Dropdown" class="p-invalid" />
                     </div>
@@ -66,6 +70,10 @@
     &lt;div class="p-field p-col-12 p-md-4"&gt;
         &lt;InputNumber id="inputnumber" v-model="value6" placeholder="InputNumber" class="p-invalid" /&gt;
     &lt;/div&gt;
+    &lt;div class="p-field p-col-12 p-md-4"&gt;
+        &lt;CascadeSelect v-model="selectedCity" :options="cascadeCountries" optionLabel="cname" optionGroupLabel="name"
+            :optionGroupChildren="['states', 'cities']" placeholder="CascadeSelect" class="p-invalid" /&gt;
+    &lt;/div&gt;
     &lt;div class="p-field p-col-12 p-md-4"&gt;
         &lt;Dropdown id="dropdown" v-model="value7" :options="cities" optionLabel="name" placeholder="Dropdown" class="p-invalid" /&gt;
     &lt;/div&gt;
@@ -103,7 +111,84 @@ export default {
             value6: null,
             value7: null,
             value8: null,
-            value9: null
+            value9: null,
+            selectedCity: null,
+            cascadeCountries: [
+                {
+                    name: 'Australia',
+                    code: 'AU',
+                    states: [
+                        {
+                            name: 'New South Wales',
+                            cities: [
+                                {cname: 'Sydney', code: 'A-SY'},
+                                {cname: 'Newcastle', code: 'A-NE'},
+                                {cname: 'Wollongong', code: 'A-WO'}
+                            ]
+                        },
+                        {
+                            name: 'Queensland',
+                            cities: [
+                                {cname: 'Brisbane', code: 'A-BR'},
+                                {cname: 'Townsville', code: 'A-TO'}
+                            ]
+                        },
+                        
+                    ]
+                },
+                {
+                    name: 'Canada', 
+                    code: 'CA',
+                    states: [
+                        {
+                            name: 'Quebec',
+                            cities: [
+                                {cname: 'Montreal', code: 'C-MO'},
+                                {cname: 'Quebec City', code: 'C-QU'}
+                            ]
+                        },
+                        {
+                            name: 'Ontario',
+                            cities: [
+                                {cname: 'Ottawa', code: 'C-OT'},
+                                {cname: 'Toronto', code: 'C-TO'}
+                            ]
+                        },
+                        
+                    ]
+                },
+                {
+                    name: 'United States',
+                    code: 'US',
+                    states: [
+                        {
+                            name: 'California',
+                            cities: [
+                                {cname: 'Los Angeles', code: 'US-LA'},
+                                {cname: 'San Diego', code: 'US-SD'},
+                                {cname: 'San Francisco', code: 'US-SF'}
+                            ]
+                        },
+                        {
+                            name: 'Florida',
+                            cities: [
+                                {cname: 'Jacksonville', code: 'US-JA'},
+                                {cname: 'Miami', code: 'US-MI'},
+                                {cname: 'Tampa', code: 'US-TA'},
+                                {cname: 'Orlando', code: 'US-OR'}
+                            ]
+                        },
+                        {
+                            name: 'Texas',
+                            cities: [
+                                {cname: 'Austin', code: 'US-AU'},
+                                {cname: 'Dallas', code: 'US-DA'},
+                                {cname: 'Houston', code: 'US-HO'}
+                            ]
+                        }
+                    ]
+                }
+            ]
         }
     },
     countryService: null,
@@ -159,7 +244,84 @@ export default {
             value6: null,
             value7: null,
             value8: null,
-            value9: null
+            value9: null,
+            selectedCity: null,
+            cascadeCountries: [
+                {
+                    name: 'Australia',
+                    code: 'AU',
+                    states: [
+                        {
+                            name: 'New South Wales',
+                            cities: [
+                                {cname: 'Sydney', code: 'A-SY'},
+                                {cname: 'Newcastle', code: 'A-NE'},
+                                {cname: 'Wollongong', code: 'A-WO'}
+                            ]
+                        },
+                        {
+                            name: 'Queensland',
+                            cities: [
+                                {cname: 'Brisbane', code: 'A-BR'},
+                                {cname: 'Townsville', code: 'A-TO'}
+                            ]
+                        },
+                        
+                    ]
+                },
+                {
+                    name: 'Canada', 
+                    code: 'CA',
+                    states: [
+                        {
+                            name: 'Quebec',
+                            cities: [
+                                {cname: 'Montreal', code: 'C-MO'},
+                                {cname: 'Quebec City', code: 'C-QU'}
+                            ]
+                        },
+                        {
+                            name: 'Ontario',
+                            cities: [
+                                {cname: 'Ottawa', code: 'C-OT'},
+                                {cname: 'Toronto', code: 'C-TO'}
+                            ]
+                        },
+                        
+                    ]
+                },
+                {
+                    name: 'United States',
+                    code: 'US',
+                    states: [
+                        {
+                            name: 'California',
+                            cities: [
+                                {cname: 'Los Angeles', code: 'US-LA'},
+                                {cname: 'San Diego', code: 'US-SD'},
+                                {cname: 'San Francisco', code: 'US-SF'}
+                            ]
+                        },
+                        {
+                            name: 'Florida',
+                            cities: [
+                                {cname: 'Jacksonville', code: 'US-JA'},
+                                {cname: 'Miami', code: 'US-MI'},
+                                {cname: 'Tampa', code: 'US-TA'},
+                                {cname: 'Orlando', code: 'US-OR'}
+                            ]
+                        },
+                        {
+                            name: 'Texas',
+                            cities: [
+                                {cname: 'Austin', code: 'US-AU'},
+                                {cname: 'Dallas', code: 'US-DA'},
+                                {cname: 'Houston', code: 'US-HO'}
+                            ]
+                        }
+                    ]
+                }
+            ]
         }
     },
     countryService: null,