diff --git a/packages/former/package.json b/packages/former/package.json
index a888dd5..2b3f8b3 100644
--- a/packages/former/package.json
+++ b/packages/former/package.json
@@ -1,6 +1,6 @@
 {
   "name": "former-ui",
-  "version": "0.0.11-next.31",
+  "version": "0.0.11-next.36",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/geprog/former.git"
diff --git a/packages/former/src/types.ts b/packages/former/src/types.ts
index c1cfa51..c442c8d 100644
--- a/packages/former/src/types.ts
+++ b/packages/former/src/types.ts
@@ -5,7 +5,8 @@ export type SchemaNode<Props = { [key: string]: any }> = {
   name?: string;
   props?: Props;
   children?: SchemaNode<Props>[];
-  if?: string;
+  showIf?: string;
+  errorMessage?: true | string;
 };
 
 export type InternalSchemaNode<Props = { [key: string]: any }> = Omit<SchemaNode<Props>, 'children'> & {