error when i use endpoints in the project

[mxq0923]

config in main.tf like this

provider "baiducloud" {
  access_key = "access_keyxadajdiajo"
  secret_key = "secret_keyxxafjasdfkd "
  endpoints [
      bos = "bos_custom_endpoint"
    ]
}

Error: Argument or block definition required

on main.tf line 11, in provider "baiducloud":
11: endpoints [

An argument or block definition is required here. To set an argument, use the
equals sign "=" to introduce the argument value.

[mxq0923]

any update?