diff --git a/src/CollaborationSession/collaborationsession.schema.ts b/src/CollaborationSession/collaborationsession.schema.ts
index 9623831..361e2b0 100644
--- a/src/CollaborationSession/collaborationsession.schema.ts
+++ b/src/CollaborationSession/collaborationsession.schema.ts
@@ -88,17 +88,17 @@ export class CollaborationSessionSchema extends PothosSchema {
           /* ---------- use case 1 : customer get collaboration session by id --------- */
           if (ctx.http.me?.role === Role.CUSTOMER && collaborationSession) {
             // if collaboratorsIds not include current user id, add it
-            if (!collaborationSession.collaboratorsIds.includes(ctx.http.me?.id)) {
-              collaborationSession.collaboratorsIds.push(ctx.http.me?.id)
-              await this.prisma.collaborationSession.update({
-                where: {
-                  id: collaborationSession.id,
-                },
-                data: {
-                  collaboratorsIds: collaborationSession.collaboratorsIds,
-                },
-              })
-            }
+            // if (!collaborationSession.collaboratorsIds.includes(ctx.http.me?.id)) {
+            //   collaborationSession.collaboratorsIds.push(ctx.http.me?.id)
+            //   await this.prisma.collaborationSession.update({
+            //     where: {
+            //       id: collaborationSession.id,
+            //     },
+            //     data: {
+            //       collaboratorsIds: collaborationSession.collaboratorsIds,
+            //     },
+            //   })
+            // }
             return collaborationSession
           }
           /* ---------- use case 2 : center mentor get collaboration session by schedule date id --------- */