diff --git a/components/google-cloud/RELEASE.md b/components/google-cloud/RELEASE.md
index 20fc219125d8..416a0f5bab87 100644
--- a/components/google-cloud/RELEASE.md
+++ b/components/google-cloud/RELEASE.md
@@ -8,6 +8,7 @@
 * Add check that component in preview.custom_job.utils.create_custom_training_job_from_component doesn't have any parameters that share names with any custom job fields
 * Add dynamic machine spec support for `preview.custom_job.utils.create_custom_training_job_from_component`.
 * Add preflight validations for LLM text generation pipeline.
+* Add dynamic support for boot_disk_type, boot_disk_size, nfs_mounts, env in `preview.custom_job.utils.create_custom_training_job_from_component`.
 
 ## Release 2.15.0
 * Add Gemini batch prediction support to `v1.model_evaluation.autosxs_pipeline`.
diff --git a/components/google-cloud/google_cloud_pipeline_components/container/preview/custom_job/remote_runner.py b/components/google-cloud/google_cloud_pipeline_components/container/preview/custom_job/remote_runner.py
index e56548c002fe..c189b5182ac4 100644
--- a/components/google-cloud/google_cloud_pipeline_components/container/preview/custom_job/remote_runner.py
+++ b/components/google-cloud/google_cloud_pipeline_components/container/preview/custom_job/remote_runner.py
@@ -32,6 +32,15 @@ def insert_system_labels_into_payload(payload):
   return json.dumps(job_spec)
 
 
+def is_json(test_string: str) -> bool:
+  try:
+    json.loads(test_string)
+  except ValueError as _:
+    return False
+  return True
+
+
+# rename this
 def cast_accelerator_count_to_int(payload):
   """Casts accelerator_count from string to an int."""
 
@@ -39,6 +48,7 @@ def cast_accelerator_count_to_int(payload):
   # TODO(b/353577594): accelerator_count placeholder is not resolved to int.
   # Need to typecast to int to avoid type mismatch error. Can remove when fix
   # placeholder resolution.
+  # worker_pool_spec = job_spec['job_spec']['worker_pool_specs'][0]
   if (
       'accelerator_count'
       in job_spec['job_spec']['worker_pool_specs'][0]['machine_spec']
@@ -50,6 +60,44 @@ def cast_accelerator_count_to_int(payload):
             'accelerator_count'
         ]
     )
+  # print(
+  #     'after accelerator_count:'
+  #     f' {repr(worker_pool_spec["machine_spec"]["accelerator_count"])}'
+  if (
+      job_spec['job_spec']['worker_pool_specs'][0]
+      .get('boot_disk', {})
+      .get('boot_disk_size_gb', '')
+  ):
+    job_spec['job_spec']['worker_pool_specs'][0]['boot_disk'][
+        'boot_disk_size_gb'
+    ] = int(
+        job_spec['job_spec']['worker_pool_specs'][0]['boot_disk'][
+            'boot_disk_size_gb'
+        ]
+    )
+
+  # this doesn't work on int fields for some reason
+  # if is_json(
+  #     worker_pool_spec.get('machine_spec', {}).get('accelerator_count', '')
+  # ):
+  #   worker_pool_spec['machine_spec']['accelerator_count'] = json.loads(
+  #       worker_pool_spec['machine_spec']['accelerator_count']
+  #   )
+  # if is_json(
+  #     worker_pool_spec.get('boot_disk', {}).get('boot_disk_size_gb', '')
+  # ):
+  #   worker_pool_spec['boot_disk']['boot_disk_size_gb'] = json.loads(
+  #       worker_pool_spec['boot_disk']['boot_disk_size_gb']
+  #   )
+  # if is_json(worker_pool_spec.get('container_spec', {}).get('env', '')):
+  #   worker_pool_spec['container_spec']['env'] = json.loads(
+  #       worker_pool_spec['container_spec']['env']
+  #   )
+  # print(f"before nfs_mounts: {repr(worker_pool_spec['nfs_mounts'])}")
+  # if is_json(worker_pool_spec.get('nfs_mounts', '')):
+  #   worker_pool_spec['nfs_mounts'] =
+  #      json.loads(worker_pool_spec['nfs_mounts'])
+  # print(f"after nfs_mounts: {repr(worker_pool_spec['nfs_mounts'])}")
   return json.dumps(job_spec)
 
 
diff --git a/components/google-cloud/google_cloud_pipeline_components/preview/custom_job/utils.py b/components/google-cloud/google_cloud_pipeline_components/preview/custom_job/utils.py
index ed35a559f557..36e9039987cd 100644
--- a/components/google-cloud/google_cloud_pipeline_components/preview/custom_job/utils.py
+++ b/components/google-cloud/google_cloud_pipeline_components/preview/custom_job/utils.py
@@ -48,6 +48,9 @@ def _replace_executor_placeholder(
   ]
 
 
+# there is trouble parsing nfs_mounts
+# https://pantheon.corp.google.com/vertex-ai/pipelines/locations/us-central1/runs/pipeline-20240731020844?project=managed-pipeline-test&e=13802955&mods=-autopush_coliseum&inv=1&invt=AbYIhQ
+# i think probably same error with env
 # keep identical to CustomTrainingJobOp
 def create_custom_training_job_from_component(
     component_spec: Callable,
@@ -163,15 +166,32 @@ def create_custom_training_job_from_component(
               user_component_container.get('args', [])
           ),
           'env': env or [],
+          # 'env': [],
+          # 'env': "{{$.inputs.parameters['env']}}",
+          # 'env': "{{$.json_escape[1].inputs.parameters['env']}}",
+          # 'env': "{{$.inputs.parameters['env'].json_escape[1]}}",
+          # 'env': "{{$.inputs.parameters['env'].json_escape[0]}}",
+          # 'env': "{{$.inputs.parameters['env'].json_escape[2]}}",
       },
+      'disk_spec': {
+          'boot_disk_type': "{{$.inputs.parameters['boot_disk_type']}}",
+          # 'boot_disk_size_gb': "{{$.inputs.parameters['boot_disk_size_gb']}}",
+      },
+      # 'nfs_mounts': "{{$.inputs.parameters['nfs_mounts']}}",
   }
-  if boot_disk_type:
-    worker_pool_spec['disk_spec'] = {
-        'boot_disk_type': boot_disk_type,
-        'boot_disk_size_gb': boot_disk_size_gb,
-    }
-  if nfs_mounts:
-    worker_pool_spec['nfs_mounts'] = nfs_mounts
+  # list fields (env, nfs_mounts) cause issues with parsing payload.
+  # even with local unit tests
+  # probably remote_runner json.loads is doing something unexpected.
+
+  # worker_pool_spec['container_spec']['env'] = json.loads(
+
+  # if boot_disk_type:
+  #   worker_pool_spec['disk_spec'] = {
+  #       'boot_disk_type': boot_disk_type,
+  #       'boot_disk_size_gb': boot_disk_size_gb,
+  #   }
+  # if nfs_mounts:
+  #   worker_pool_spec['nfs_mounts'] = nfs_mounts
 
   worker_pool_specs = [worker_pool_spec]
 
@@ -212,9 +232,6 @@ def create_custom_training_job_from_component(
     ] = default_value
 
   # add machine parameters into the customjob component
-  if accelerator_type == 'ACCELERATOR_TYPE_UNSPECIFIED':
-    accelerator_count = 0
-
   cj_component_spec['inputDefinitions']['parameters']['machine_type'] = {
       'parameterType': 'STRING',
       'defaultValue': machine_type,
@@ -227,7 +244,31 @@ def create_custom_training_job_from_component(
   }
   cj_component_spec['inputDefinitions']['parameters']['accelerator_count'] = {
       'parameterType': 'NUMBER_INTEGER',
-      'defaultValue': accelerator_count,
+      'defaultValue': (
+          accelerator_count
+          if accelerator_type != 'ACCELERATOR_TYPE_UNSPECIFIED'
+          else 0
+      ),
+      'isOptional': True,
+  }
+  cj_component_spec['inputDefinitions']['parameters']['boot_disk_type'] = {
+      'parameterType': 'STRING',
+      'defaultValue': boot_disk_type,
+      'isOptional': True,
+  }
+  cj_component_spec['inputDefinitions']['parameters']['boot_disk_size_gb'] = {
+      'parameterType': 'NUMBER_INTEGER',
+      'defaultValue': boot_disk_size_gb,
+      'isOptional': True,
+  }
+  cj_component_spec['inputDefinitions']['parameters']['nfs_mounts'] = {
+      'parameterType': 'LIST',
+      'defaultValue': nfs_mounts or [],
+      'isOptional': True,
+  }
+  cj_component_spec['inputDefinitions']['parameters']['env'] = {
+      'parameterType': 'LIST',
+      'defaultValue': env or [],
       'isOptional': True,
   }