diff --git a/.github/workflows/interactive.yml b/.github/workflows/interactive.yml
index 716c79ac2627..d160d4636b60 100644
--- a/.github/workflows/interactive.yml
+++ b/.github/workflows/interactive.yml
@@ -212,12 +212,9 @@ jobs:
         GLOG_v=10 ./bin/bulk_loader -g ${SCHEMA_FILE} -l ${BULK_LOAD_FILE} -d ${TMP_INTERACTIVE_WORKSPACE}/data/modern_graph/indices/
         cd ${GITHUB_WORKSPACE}/flex/tests/hqps
         sed -i 's/interactive_workspace/temp_workspace/g' ./interactive_config_test.yaml
-        # set thread_num_per_worker to 4
-        sed -i 's/thread_num_per_worker: 1/thread_num_per_worker: 4/g' ./interactive_config_test.yaml
         bash hqps_sdk_test.sh ${TMP_INTERACTIVE_WORKSPACE} ./interactive_config_test.yaml java
         bash hqps_sdk_test.sh ${TMP_INTERACTIVE_WORKSPACE} ./interactive_config_test.yaml python
         sed -i 's/temp_workspace/interactive_workspace/g' ./interactive_config_test.yaml
-        sed -i 's/thread_num_per_worker: 4/thread_num_per_worker: 1/g' ./interactive_config_test.yaml
   
     - name: Robustness test 
       env:
diff --git a/flex/openapi/openapi_coordinator.yaml b/flex/openapi/openapi_coordinator.yaml
index a3029de3c5cc..88d5bb9affd1 100644
--- a/flex/openapi/openapi_coordinator.yaml
+++ b/flex/openapi/openapi_coordinator.yaml
@@ -331,6 +331,8 @@ components:
           type: string
         type:
           $ref: '#/components/schemas/GSDataType'
+        allow_cast:
+          type: boolean
 
     BasePropertyMeta:
       required:
diff --git a/flex/openapi/openapi_interactive.yaml b/flex/openapi/openapi_interactive.yaml
index 961a904869db..bdbf4474907b 100644
--- a/flex/openapi/openapi_interactive.yaml
+++ b/flex/openapi/openapi_interactive.yaml
@@ -1436,6 +1436,9 @@ components:
           example: param1
         type:
           $ref: '#/components/schemas/GSDataType'
+        allow_cast:
+          type: boolean
+          example: true
     VertexRequest:
       x-body-name: vertex_request
       type: object