diff --git a/projects/common/src/fm/services/item.service.ts b/projects/common/src/fm/services/item.service.ts
index d5ed374..4924c55 100644
--- a/projects/common/src/fm/services/item.service.ts
+++ b/projects/common/src/fm/services/item.service.ts
@@ -41,7 +41,7 @@ export class ItemService {
     }
     if (parentCode) params = params.append("pc", parentCode);
     if (dataFilter) params = params.append("df", dataFilter);
-    if (level) params = params.append("lvl", level);
+    if (level) params = params.append("lvl", level.toString());
     return this.httpClient.get<any>(`${this.ApiEndpoint()}/api/v1/items/features/`, {params:params});
   }