diff --git a/api/app/core/workflow/engine/graph_builder.py b/api/app/core/workflow/engine/graph_builder.py
index daef6e82..4f76d694 100644
--- a/api/app/core/workflow/engine/graph_builder.py
+++ b/api/app/core/workflow/engine/graph_builder.py
@@ -31,7 +31,7 @@ logger = logging.getLogger(__name__)
 # Example:
 #   "Hello {{user.name}}!" ->
 #   ["Hello ", "{{user.name}}", "!"]
-_OUTPUT_PATTERN = re.compile(r'\{\{.*?}}|[^{}]+')
+_OUTPUT_PATTERN = re.compile(r'\{\{.*?}}|[^{]+|{')
 # Strict variable format: {{ node_id.field_name }}
 _VARIABLE_PATTERN = re.compile(r'\{\{\s*[a-zA-Z0-9_]+\.[a-zA-Z0-9_]+\s*}}')
 
diff --git a/api/app/core/workflow/nodes/cycle_graph/node.py b/api/app/core/workflow/nodes/cycle_graph/node.py
index fc80939f..68c83025 100644
--- a/api/app/core/workflow/nodes/cycle_graph/node.py
+++ b/api/app/core/workflow/nodes/cycle_graph/node.py
@@ -55,9 +55,9 @@ class CycleGraphNode(BaseNode):
             if config.output_type in [
                 VariableType.ARRAY_FILE,
                 VariableType.ARRAY_STRING,
-                VariableType.NUMBER,
+                VariableType.ARRAY_NUMBER,
                 VariableType.ARRAY_OBJECT,
-                VariableType.BOOLEAN
+                VariableType.ARRAY_BOOLEAN
             ]:
                 if config.flatten:
                     outputs['output'] = config.output_type