diff --git a/cases/ai1.py b/cases/ai1.py
new file mode 100644
index 00000000..ff92825e
--- /dev/null
+++ b/cases/ai1.py
@@ -0,0 +1,12 @@
+from modelscope.pipelines import pipeline
+from modelscope.outputs import OutputKeys
+from PIL import Image
+from background_generation import modelscope_warpper
+
+model = "damo/cv_background_generation_sd"
+pipe = pipeline('background_generation_task', model=model, device='gpu', auto_collate=False, model_revision='v1.1.0')
+main_image = 'https://vision-poster.oss-cn-shanghai.aliyuncs.com/lllcho.lc/data/test_data/demo_example/%E5%8C%96%E5%A6%86%E5%93%81/1c33fc5e8b084269ffdb4e0557c2c3c4.png'
+reference_image = 'https://vision-poster.oss-cn-shanghai.aliyuncs.com/lllcho.lc/data/test_data/5d873b5f64b82bcbb235748347602dce38c6ec1d.jpg'
+out = pipe(main_image, reference_image, num_images_per_prompt=1)
+imgs = out[OutputKeys.OUTPUT_IMGS]
+imgs[0].save(f'result.jpg')
diff --git a/conv.php b/conv.php
index 113c78be..d92fe962 100644
--- a/conv.php
+++ b/conv.php
@@ -119,6 +119,8 @@ class Translator
                 return 'PyCore::str("' . $attr->s . '")';
             case 'Call':
                 return $this->parseCall($attr);
+            case 'Subscript':
+                return $this->parseSubscript($attr);
             default:
                 var_dump(__METHOD__, __LINE__);
                 debug($attr);