Couldn't see variable sets in Harness IACM Workspace after attaching by Terraform code

Below are state file after successfully apply terraform code to attach variable set to Harness IACM Workspace:

"type": "harness_platform_workspace",

"name": "this",

"variable_sets": [

"mgmt_shared_credentials_dev",

"mgmt_hcv_shared_credentials_dev",

"mgmt_shared_vault_token_dev",

"mgmt_shared_credentials_vwan_dev"

]

But we couldn't see variable sets in Harness IACM Workspace UI.

Please help to check.