diff --git a/desktop_env/envs/desktop_env.py b/desktop_env/envs/desktop_env.py
index 7dd70b6..b443a4a 100644
--- a/desktop_env/envs/desktop_env.py
+++ b/desktop_env/envs/desktop_env.py
@@ -58,7 +58,8 @@ class DesktopEnv(gym.Env):
             tmp_dir: str = "tmp",
             cache_dir: str = "cache",
             screen_size: Tuple[int] = (1920, 1080),
-            headless: bool = False
+            headless: bool = False,
+            require_a11y_tree: bool = True,
     ):
         """
         Args:
@@ -77,6 +78,7 @@ class DesktopEnv(gym.Env):
         self.cache_dir_base: str = cache_dir
         self.vm_screen_size = screen_size  # todo: add the logic to get the screen size from the VM
         self.headless = headless
+        self.require_a11y_tree = require_a11y_tree
 
         os.makedirs(self.tmp_dir_base, exist_ok=True)
 
@@ -248,7 +250,7 @@ class DesktopEnv(gym.Env):
 
         observation = {
             "screenshot": self._get_obs(),
-            "accessibility_tree": self.controller.get_accessibility_tree(),
+            "accessibility_tree": self.controller.get_accessibility_tree() if self.require_a11y_tree else None,
         }
         return observation
 
@@ -284,7 +286,7 @@ class DesktopEnv(gym.Env):
 
         observation = {
             "screenshot": self._get_obs(),
-            "accessibility_tree": self.controller.get_accessibility_tree(),
+            "accessibility_tree": self.controller.get_accessibility_tree() if self.require_a11y_tree else None,
             # "terminal": self.controller.get_terminal_output(),
             "instruction": self.instruction
         }
diff --git a/desktop_env/evaluators/metrics/__init__.py b/desktop_env/evaluators/metrics/__init__.py
index 61bb025..341e138 100644
--- a/desktop_env/evaluators/metrics/__init__.py
+++ b/desktop_env/evaluators/metrics/__init__.py
@@ -77,6 +77,7 @@ from .general import (
     literal_match
 )
 from .gimp import (
+    check_structure_sim_resized,
     check_brightness_decrease_and_structure_sim,
     check_contrast_increase_and_structure_sim,
     check_saturation_increase_and_structure_sim,
diff --git a/mm_agents/agent.py b/mm_agents/agent.py
index f2d4b5c..e9f1147 100644
--- a/mm_agents/agent.py
+++ b/mm_agents/agent.py
@@ -350,7 +350,7 @@ class PromptAgent:
         # {{{1
         if self.observation_type in ["screenshot", "screenshot_a11y_tree"]:
             base64_image = encode_image(obs["screenshot"])
-            linearized_accessibility_tree = linearize_accessibility_tree(accessibility_tree=obs["accessibility_tree"])
+            linearized_accessibility_tree = linearize_accessibility_tree(accessibility_tree=obs["accessibility_tree"]) if self.observation_type == "screenshot_a11y_tree" else None
             logger.debug("LINEAR AT: %s", linearized_accessibility_tree)
 
             if self.observation_type == "screenshot_a11y_tree":
diff --git a/run.py b/run.py
index 92e989a..e6f67f9 100644
--- a/run.py
+++ b/run.py
@@ -95,6 +95,10 @@ def config() -> argparse.Namespace:
     parser.add_argument("--max_tokens", type=int, default=1500)
     parser.add_argument("--stop_token", type=str, default=None)
 
+    # example config
+    parser.add_argument("--domain", type=str, default="all")
+    parser.add_argument("--test_all_meta_path", type=str, default="evaluation_examples/test_all.json")
+
     # logging related
     parser.add_argument("--result_dir", type=str, default="./results")
     args = parser.parse_args()
@@ -144,6 +148,7 @@ def test(
         action_space=agent.action_space,
         screen_size=(args.screen_width, args.screen_height),
         headless=args.headless,
+        require_a11y_tree=args.observation_type in ["a11y_tree", "screenshot_a11y_tree", "som"],
     )
 
     for domain in tqdm(test_all_meta, desc="Domain"):
@@ -264,9 +269,12 @@ if __name__ == '__main__':
     os.environ["TOKENIZERS_PARALLELISM"] = "false"
     args = config()
 
-    with open("evaluation_examples/test_all.json", "r", encoding="utf-8") as f:
+    with open(args.test_all_meta_path, "r", encoding="utf-8") as f:
         test_all_meta = json.load(f)
 
+    if args.domain != "all":
+        test_all_meta = {args.domain: test_all_meta[args.domain]}
+
     test_file_list = get_unfinished(
         args.action_space,
         args.model,