diff --git a/chain_service/__main__.py b/chain_service/__main__.py
new file mode 100644
index 0000000..e69de29
diff --git a/chain_service/controllers/run_chain.py b/chain_service/controllers/run_chain.py
index 7b50981..37b1fd5 100644
--- a/chain_service/controllers/run_chain.py
+++ b/chain_service/controllers/run_chain.py
@@ -34,6 +34,7 @@ async def run_chain_controller(
             task_id=run_chain_input.task_id,
             namespace_id=chain.namespace_id,
             recipients=run_chain_input.recipients,
+            variables=run_chain_input.variables,
         )
 
         progress_chain = await progress_chain_repository.upsert(progress_chain)
diff --git a/chain_service/database/models/progress_chain.py b/chain_service/database/models/progress_chain.py
index 2813c54..04cf492 100644
--- a/chain_service/database/models/progress_chain.py
+++ b/chain_service/database/models/progress_chain.py
@@ -4,7 +4,7 @@ from .base import BaseConfig, BaseMongoModel
 from enum import Enum
 from datetime import datetime
 from pydantic import BaseModel, Field
-from typing import Literal, Union, Annotated, Optional, List
+from typing import Literal, Union, Annotated, Optional, Dict, List
 
 
 class ProgressActionStatusEnum(str, Enum):
@@ -51,6 +51,7 @@ Action = Annotated[
 class ProgressChain(BaseMongoModel):
     task_id: int
     namespace_id: str
+    variables: Annotated[Optional[Dict], Field(default={})]
     recipients: Annotated[Optional[List[int]], Field(default=[])]
     name: Annotated[Optional[str], Field(default=None)]
     actions: Annotated[Optional[List[Action]], Field(default=[])]
@@ -62,11 +63,18 @@ class ProgressChain(BaseMongoModel):
         chain: Chain,
         task_id: int,
         namespace_id: str,
+        variables: Optional[Dict] = {},
         recipients: Optional[List[int]] = [],
     ):
+
+        for action in filter(lambda c: c.action_type == "comment", chain.actions):
+            for key, value in variables.items():
+                action.text = action.text.replace(f"{{{{{key}}}}}", value)
+
         return ProgressChain(
             task_id=task_id,
             namespace_id=namespace_id,
+            variables=variables,
             recipients=recipients,
             name=chain.name,
             actions=map(Chain.model_dump, chain.actions),
diff --git a/chain_service/schema/run_chain.py b/chain_service/schema/run_chain.py
index 2031e42..91ba262 100644
--- a/chain_service/schema/run_chain.py
+++ b/chain_service/schema/run_chain.py
@@ -1,12 +1,13 @@
 from .base import BaseConfig
 
 from pydantic import BaseModel, Field
-from typing import Annotated, Optional, List
+from typing import Annotated, Optional, Dict, List
 
 
 class RunChainInput(BaseModel):
     task_id: int
     chain_id: str
+    variables: Annotated[Optional[Dict], Field(default={})]
     recipients: Annotated[Optional[List[int]], Field(default=[])]
 
     class Config(BaseConfig):