diff --git a/python/meson.build b/python/meson.build
index ca7fdee..cff2a3b 100644
--- a/python/meson.build
+++ b/python/meson.build
@@ -5,7 +5,7 @@ project(
 	).stdout().strip('\n'),
 # 	'online.fxreader.uv',
 # 	['c', 'cpp'],
-	version: '0.1.5.18',
+	version: '0.1.5.19',
 # 	default_options: [
 # 		'cpp_std=c++23',
 # 		# 'prefer_static=true',
diff --git a/python/online/fxreader/pr34/commands_typed/cli_bootstrap.py b/python/online/fxreader/pr34/commands_typed/cli_bootstrap.py
index 40e9f45..ca9cc64 100644
--- a/python/online/fxreader/pr34/commands_typed/cli_bootstrap.py
+++ b/python/online/fxreader/pr34/commands_typed/cli_bootstrap.py
@@ -172,10 +172,19 @@ def check_list(
 		)
 
 
-def check_type(value: Any, VT: Type[Value]) -> Value:
-	assert isinstance(value, VT)
+def check_type(
+	value: Any,
+	VT: Type[Value],
+	attribute_name: Optional[str] = None,
+) -> Value:
+	if attribute_name:
+		attribute_value = getattr(value, attribute_name)
+		assert isinstance(attribute_value, VT)
+		return attribute_value
+	else:
+		assert isinstance(value, VT)
 
-	return value
+		return value
 
 
 def pyproject_load(
diff --git a/releases/whl/online_fxreader_pr34-0.1.5.19-py3-none-any.whl b/releases/whl/online_fxreader_pr34-0.1.5.19-py3-none-any.whl
new file mode 100644
index 0000000..07d5c9b
--- /dev/null
+++ b/releases/whl/online_fxreader_pr34-0.1.5.19-py3-none-any.whl
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c41fac5f3f04295d11aff5a55783580c39a2bbf783c24434af9eab82ecaf7830
+size 72256