diff --git a/catalog-ui/src/app/models/attributes.ts b/catalog-ui/src/app/models/attributes.ts
index 80af540..a51358c 100644
--- a/catalog-ui/src/app/models/attributes.ts
+++ b/catalog-ui/src/app/models/attributes.ts
@@ -41,13 +41,12 @@
     //server data
     uniqueId:string;
     name:string;
-    defaultValue:string;
+    _default:string;
     description:string;
     type:string;
     schema:SchemaAttributeGroupModel;
     status:string;
     value:string;
-    hidden:boolean;
     parentUniqueId:string;
     //custom data
     resourceInstanceUniqueId:string;
@@ -60,13 +59,12 @@
     //server data
     uniqueId:string;
     name:string;
-    defaultValue:string;
+    _default:string;
     description:string;
     type:string;
     schema:SchemaAttributeGroupModel;
     status:string;
     value:string;
-    hidden:boolean;
     parentUniqueId:string;
     //custom data
     resourceInstanceUniqueId:string;
@@ -77,20 +75,18 @@
         if (attribute) {
             this.uniqueId = attribute.uniqueId;
             this.name = attribute.name;
-            this.defaultValue = attribute.defaultValue;
+            this._default = attribute._default;
             this.description = attribute.description;
             this.type = attribute.type;
             this.status = attribute.status;
             this.schema = attribute.schema;
             this.value = attribute.value;
-            this.hidden = attribute.hidden;
             this.parentUniqueId = attribute.parentUniqueId;
             this.resourceInstanceUniqueId = attribute.resourceInstanceUniqueId;
             this.readonly = attribute.readonly;
             this.valueUniqueUid = attribute.valueUniqueUid;
         } else {
-            this.defaultValue = '';
-            this.hidden = false;
+            this._default = '';
         }
 
         if (!this.schema || !this.schema.property) {
@@ -104,13 +100,13 @@
     }
 
     public convertToServerObject():string {
-        if (this.defaultValue && this.type === 'map') {
-            this.defaultValue = '{' + this.defaultValue + '}';
+        if (this._default && this.type === 'map') {
+            this._default = '{' + this._default + '}';
         }
-        if (this.defaultValue && this.type === 'list') {
-            this.defaultValue = '[' + this.defaultValue + ']';
+        if (this._default && this.type === 'list') {
+            this._default = '[' + this._default + ']';
         }
-        this.defaultValue = this.defaultValue != "" && this.defaultValue != "[]" && this.defaultValue != "{}" ? this.defaultValue : null;
+        this._default = this._default != "" && this._default != "[]" && this._default != "{}" ? this._default : null;
 
         return JSON.stringify(this);
     };
@@ -118,10 +114,10 @@
 
     public convertValueToView() {
         //unwrapping value {} or [] if type is complex
-        if (this.defaultValue && (this.type === 'map' || this.type === 'list') &&
-            ['[', '{'].indexOf(this.defaultValue.charAt(0)) > -1 &&
-            [']', '}'].indexOf(this.defaultValue.slice(-1)) > -1) {
-            this.defaultValue = this.defaultValue.slice(1, -1);
+        if (this._default && (this.type === 'map' || this.type === 'list') &&
+            ['[', '{'].indexOf(this._default.charAt(0)) > -1 &&
+            [']', '}'].indexOf(this._default.slice(-1)) > -1) {
+            this._default = this._default.slice(1, -1);
         }
 
         //also for value - for the modal in canvas
diff --git a/catalog-ui/src/app/ng2/pages/workspace/attributes/attribute-modal.component.html b/catalog-ui/src/app/ng2/pages/workspace/attributes/attribute-modal.component.html
index bd30a46..094045e 100644
--- a/catalog-ui/src/app/ng2/pages/workspace/attributes/attribute-modal.component.html
+++ b/catalog-ui/src/app/ng2/pages/workspace/attributes/attribute-modal.component.html
@@ -48,19 +48,19 @@
             <!-- ATTRIBUTE DEFAULT VALUE TEXT - OPTIONAL -->
             <div *ngIf="attributeToEdit.type != 'boolean'">
                 <sdc-input
-                        #defaultValue
+                        #_default
                         [required]="false"
                         label="Default Value"
-                        [(value)]="attributeToEdit.defaultValue"
+                        [(value)]="attributeToEdit._default"
                         [disabled]="false"
-                        name="defaultValue"
+                        name="_default"
                         testId="defaultValue"
                         [maxLength]="255"
                         (valueChange)="defaultValueChanged()">
                 </sdc-input>
 
-                <sdc-validation [validateElement]="defaultValue" (validityChanged)="onValidityChange($event, 'defaultValue')">
-                    <sdc-regex-validator *ngIf="this.attributeToEdit.defaultValue && this.attributeToEdit.defaultValue.length > 0"  message="{{ this.defaultValueErrorMessage }}"
+                <sdc-validation [validateElement]="_default" (validityChanged)="onValidityChange($event, 'default')">
+                    <sdc-regex-validator *ngIf="this.attributeToEdit._default && this.attributeToEdit._default.length > 0" message="{{ this.defaultValueErrorMessage }}"
                                          [pattern]="defaultValuePattern"></sdc-regex-validator>
                     <sdc-custom-validator *ngIf="this.attributeToEdit.type == 'map' && this.attributeToEdit.schema.property.type" message="{{ 'PROPERTY_EDIT_MAP_UNIQUE_KEYS' | translate }}"
                                           [callback]="isMapUnique" [disabled]="false"></sdc-custom-validator>
@@ -71,7 +71,7 @@
             <div *ngIf="attributeToEdit.type == 'boolean'">
                 <sdc-dropdown [disabled]="false" label="Default Value"
                               [required]="false"
-                              [selectedOption]="toDropDownOption(this.attributeToEdit.defaultValue)" placeHolder="Choose Default Value"
+                              [selectedOption]="toDropDownOption(this.attributeToEdit._default)" placeHolder="Choose Default Value"
                               [options]="booleanValues" (changed)="onBooleanDefaultValueSelected($event)">
 
                 </sdc-dropdown>
@@ -88,17 +88,7 @@
                     </sdc-validation>
                 </sdc-dropdown>
             </div>
-
-            <!-- ATTRIBUTE HIDDEN - OPTIONAL -->
-            <sdc-checkbox
-                    label="Hidden"
-                    [checked]="attributeToEdit.hidden"
-                    [disabled]="false"
-                    testId="hidden"
-                    (checkedChange)="this.onHiddenCheckboxClicked($event)"
-            >
-            </sdc-checkbox>
         </div>
     </div>
 
-</form>
\ No newline at end of file
+</form>
diff --git a/catalog-ui/src/app/ng2/pages/workspace/attributes/attribute-modal.component.ts b/catalog-ui/src/app/ng2/pages/workspace/attributes/attribute-modal.component.ts
index c703869..b0a7651 100644
--- a/catalog-ui/src/app/ng2/pages/workspace/attributes/attribute-modal.component.ts
+++ b/catalog-ui/src/app/ng2/pages/workspace/attributes/attribute-modal.component.ts
@@ -15,7 +15,7 @@
 })
 export class AttributeModalComponent implements OnInit {
 
-    @ViewChild('defaultValue') validatedInput: InputComponent;
+    @ViewChild('_default') validatedInput: InputComponent;
 
     public readonly types = AttributeOptions.types;                         // integer, string, boolean etc.
 
@@ -44,13 +44,9 @@
         this.revalidateDefaultValue();
     }
 
-    onHiddenCheckboxClicked(event: boolean) {
-        this.attributeToEdit.hidden = event;
-    }
-
     onTypeSelected(selectedElement: IDropDownOption) {
         if (this.attributeToEdit.type !== selectedElement.value && selectedElement.value === 'boolean') {
-            this.attributeToEdit.defaultValue = ''; // Clean old value in case we choose change type to boolean
+            this.attributeToEdit._default = ''; // Clean old value in case we choose change type to boolean
         }
         this.attributeToEdit.type = selectedElement.value;
         this.revalidateDefaultValue();
@@ -58,7 +54,7 @@
 
     onBooleanDefaultValueSelected(selectedElement: IDropDownOption) {
         if (this.attributeToEdit.type === 'boolean') {
-            this.attributeToEdit.defaultValue = selectedElement.value;
+            this.attributeToEdit._default = selectedElement.value;
         }
     }
 
@@ -92,8 +88,8 @@
     }
 
     public isMapUnique = () => {
-        if (this.attributeToEdit && this.attributeToEdit.type === 'map' && this.attributeToEdit.defaultValue) {
-            return ValidationUtils.validateUniqueKeys(this.attributeToEdit.defaultValue);
+        if (this.attributeToEdit && this.attributeToEdit.type === 'map' && this.attributeToEdit._default) {
+            return ValidationUtils.validateUniqueKeys(this.attributeToEdit._default);
         }
         return true;
     }
@@ -102,7 +98,7 @@
         this.setDefaultValuePattern(this.attributeToEdit.type);
         setTimeout(() => {
             if (this.validatedInput) {
-                this.validatedInput.onKeyPress(this.attributeToEdit.defaultValue);
+                this.validatedInput.onKeyPress(this.attributeToEdit._default);
             } }, 250);
     }
 
diff --git a/catalog-ui/src/app/ng2/pages/workspace/attributes/attributes-modal.component.spec.ts b/catalog-ui/src/app/ng2/pages/workspace/attributes/attributes-modal.component.spec.ts
index 99aa140..2eed231 100644
--- a/catalog-ui/src/app/ng2/pages/workspace/attributes/attributes-modal.component.spec.ts
+++ b/catalog-ui/src/app/ng2/pages/workspace/attributes/attributes-modal.component.spec.ts
@@ -56,28 +56,18 @@
         })
     );
 
-    it('test that when hidden is clicked, hidden attribute is set', async () => {
-        fixture.componentInstance.attributeToEdit = new AttributeModel();
-        const hidden = fixture.componentInstance.attributeToEdit.hidden;
-        fixture.componentInstance.ngOnInit();
-
-        expect(hidden).toBe(false);
-        fixture.componentInstance.onHiddenCheckboxClicked(true);
-        expect(fixture.componentInstance.attributeToEdit.hidden).toBe(true);
-    });
-
     it('test that when type is set to boolean default value is cleared', async () => {
         const component = fixture.componentInstance;
         component.attributeToEdit = new AttributeModel();
         component.ngOnInit();
 
         component.onTypeSelected({ value : 'string', label : 'string'});
-        component.attributeToEdit.defaultValue = 'some_value';
+        component.attributeToEdit._default = 'some_value';
         component.onTypeSelected({ value : 'boolean', label : 'boolean'});
-        expect(component.attributeToEdit.defaultValue).toBe('');
+        expect(component.attributeToEdit._default).toBe('');
 
         component.onBooleanDefaultValueSelected({ value : 'true', label : 'true'});
-        expect(component.attributeToEdit.defaultValue).toBe('true');
+        expect(component.attributeToEdit._default).toBe('true');
     });
 
     it('test that when certain type is selected, the correct regex pattern is chosen', async () => {
@@ -120,9 +110,9 @@
         expect(component.isMapUnique()).toBe(true); // map is not selected so return true by default
         component.onTypeSelected({ value : 'map', label : 'map'});
         component.onEntrySchemaTypeSelected({ value : 'boolean', label : 'boolean' });
-        component.attributeToEdit.defaultValue = '"1":true,"2":false';
+        component.attributeToEdit._default = '"1":true,"2":false';
         expect(component.isMapUnique()).toBe(true);
-        component.attributeToEdit.defaultValue = '"1":true,"1":false';
+        component.attributeToEdit._default = '"1":true,"1":false';
         expect(component.isMapUnique()).toBe(false);
     });
 });
diff --git a/catalog-ui/src/app/ng2/pages/workspace/attributes/attributes.component.html b/catalog-ui/src/app/ng2/pages/workspace/attributes/attributes.component.html
index 00a7a5c..6d50bbe 100644
--- a/catalog-ui/src/app/ng2/pages/workspace/attributes/attributes.component.html
+++ b/catalog-ui/src/app/ng2/pages/workspace/attributes/attributes.component.html
@@ -66,7 +66,7 @@
 
         <ngx-datatable-column [resizeable]="false" name="Default Value" [flexGrow]="3">
             <ng-template ngx-datatable-cell-template let-row="row">
-                {{row.defaultValue}}
+                {{row._default}}
             </ng-template>
         </ngx-datatable-column>
 
@@ -90,4 +90,4 @@
         </ngx-datatable-column>
 
     </ngx-datatable>
-</div>
\ No newline at end of file
+</div>