bug fix

backend/core/src/main/java/org/opencdmp/model/builder/commonmodels/description/FieldCommonModelBuilder.java

@@ -116,6 +116,7 @@ public class FieldCommonModelBuilder extends BaseCommonModelBuilder<FieldModel,
                     } else {
                         fileEnvelopeModel.setFileRef(this.addFileToSharedStorage(bytes, storageFile));
                     }
+                    m.setFile(fileEnvelopeModel);
                 }catch (Exception e){
 	                this.logger.error(e.getMessage());
                 }