diff --git a/src/client/dd-hub-react/src/services/document-service.ts b/src/client/dd-hub-react/src/services/document-service.ts
index b995f8c..4545e44 100644
--- a/src/client/dd-hub-react/src/services/document-service.ts
+++ b/src/client/dd-hub-react/src/services/document-service.ts
@@ -22,6 +22,11 @@ const validExtensions: FileFormat[] = [
     'png', 'svg', 'zip', 'md'
 ];
 
+type DocAttribute = {
+    name: string;
+    serilizedValue: string;
+}
+
 export class Doc {
 
     static map(source?: Partial<Doc>): Doc {
@@ -37,6 +42,7 @@ export class Doc {
     addedWho!: string;
     changedWhen?: Date;
     changedWho?: string;
+    attributes: Array<DocAttribute> = [];
 
     getChangedInfo(separator: string = " | "): string | null {
         const who = this.changedWho?.trim();
@@ -53,7 +59,7 @@ export class Doc {
         const parts = this.name.split('.');
         if (parts.length > 1 && parts[parts.length - 1].trim() !== '') {
             const ext = parts[parts.length - 1].toLowerCase();
-            
+
             if (validExtensions.includes(ext as FileFormat))
                 return ext as FileFormat;
         }