fix incorrect field type

models/Organization/Parameters.ts

@@ -1,7 +1,6 @@
 import ApiModel from '~/models/ApiModel'
 import { Bool, Num, Str, Uid, Attr } from 'pinia-orm/dist/decorators'
 import Access from "~/models/Access/Access";
-import ApiResource from "~/models/ApiResource";
 import {IriEncoded} from "~/models/decorators";
 import File from "~/models/Core/File";
 
@@ -104,7 +103,7 @@ export default class Parameters extends ApiModel {
   @Bool(false, { notNullable: true })
   declare studentsAreAdherents: boolean
 
-  @Str(null)
+  @Num(null)
   @IriEncoded(File)
   declare qrCode: number | null