diff --git a/web/projects/ui/src/app/services/form.service.ts b/web/projects/ui/src/app/services/form.service.ts
index 80381bf3f..005b07290 100644
--- a/web/projects/ui/src/app/services/form.service.ts
+++ b/web/projects/ui/src/app/services/form.service.ts
@@ -140,6 +140,8 @@ export class FormService {
       case 'multiselect':
         value = currentValue === undefined ? spec.default : currentValue
         return this.formBuilder.control(value, multiselectValidators(spec))
+      case 'hidden':
+        return this.formBuilder.control(currentValue || null)
       case 'file':
         return this.formBuilder.control(null, fileValidators(spec))
       default: