From 035dfacb1d7e76d1e8f9ed7a071704241f73aa92 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cristopher=20Pinz=C3=B3n?=
 <18080804+pinzon@users.noreply.github.com>
Date: Tue, 27 Aug 2024 13:25:34 -0500
Subject: [PATCH] Batch: fix job parameters definition (#8043)

---
 moto/batch/models.py                | 2 +-
 tests/test_batch/test_batch_jobs.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/moto/batch/models.py b/moto/batch/models.py
index 9885cf809f8f..e0f72540f45f 100644
--- a/moto/batch/models.py
+++ b/moto/batch/models.py
@@ -639,7 +639,7 @@ def _add_parameters_to_command(self, command: Union[str, List[str]]) -> List[str
             return command
 
         new_command = [
-            command_part.replace(f"${param}", value)
+            command_part.replace(f"Ref::{param}", value)
             for command_part in command
             for param, value in self.parameters.items()
         ]
diff --git a/tests/test_batch/test_batch_jobs.py b/tests/test_batch/test_batch_jobs.py
index ae52075b8d11..724d9f61dc6c 100644
--- a/tests/test_batch/test_batch_jobs.py
+++ b/tests/test_batch/test_batch_jobs.py
@@ -1126,7 +1126,7 @@ def test_submit_job_with_parameters():
             "image": "busybox",
             "vcpus": 1,
             "memory": 512,
-            "command": ["sleep", "$seconds"],
+            "command": ["sleep", "Ref::seconds"],
         },
         parameters={"seconds": "0"},
     )