diff --git a/packages/core/client/src/collection-manager/templates/expression.tsx b/packages/core/client/src/collection-manager/templates/expression.tsx
index 1bd9adc5a..2f50b90b1 100644
--- a/packages/core/client/src/collection-manager/templates/expression.tsx
+++ b/packages/core/client/src/collection-manager/templates/expression.tsx
@@ -35,7 +35,7 @@ export const expression: ICollectionTemplate = {
           title: '{{t("Collection")}}',
           'x-component': 'CollectionSelect',
           'x-component-props': {
-            multiple: true,
+            // multiple: true,
           },
         },
       },
diff --git a/packages/core/client/src/schema-component/antd/collection-select/CollectionSelect.tsx b/packages/core/client/src/schema-component/antd/collection-select/CollectionSelect.tsx
index d02dac90a..3a3dadead 100644
--- a/packages/core/client/src/schema-component/antd/collection-select/CollectionSelect.tsx
+++ b/packages/core/client/src/schema-component/antd/collection-select/CollectionSelect.tsx
@@ -28,7 +28,15 @@ export const CollectionSelect = connect(
     const options = useOptions(props);
     const { t } = useTranslation();
 
-    return <Select placeholder={t('Select collection')} {...others} options={options} />;
+    return (
+      <Select
+        placeholder={t('Select collection')}
+        {...others}
+        showSearch
+        filterOption={(input, option) => (option?.label ?? '').includes(input)}
+        options={options}
+      />
+    );
   },
   mapReadPretty(
     observer((props: CollectionSelectProps) => {
diff --git a/packages/plugins/workflow/src/client/schemas/collection.ts b/packages/plugins/workflow/src/client/schemas/collection.ts
index 0af9cf0e1..582534641 100644
--- a/packages/plugins/workflow/src/client/schemas/collection.ts
+++ b/packages/plugins/workflow/src/client/schemas/collection.ts
@@ -7,12 +7,11 @@ export const collection = {
   type: 'string',
   title: '{{t("Collection")}}',
   required: true,
-  'x-reactions': ['{{useCollectionDataSource()}}'],
+  'x-reactions': [],
   'x-decorator': 'FormItem',
-  'x-component': 'Select',
+  'x-component': 'CollectionSelect',
   'x-component-props': {
     dropdownMatchSelectWidth: false,
-    placeholder: '{{t("Select collection")}}',
   },
 };