Create multiple subnets using terraform, each subnet should have multiple secondary adresses

Terraform Providers Google
1 
main.tf
-----------
resource "google_compute_network" "vpc_network" {
  project                 = var.project_name
  name                    = var.vpc_name
  auto_create_subnetworks = false
  mtu                     = 1460
}
resource "google_compute_subnetwork" "vpc_subnet" {

for_each = var.subnet_map
  name          = "${var.vpc_name}-${each.value.name}"
  ip_cidr_range = "${each.value.cidr}"
  region        = var.region
  network       = google_compute_network.vpc_network.id

dynamic "secondary_ip_range" {
    for_each = var.subnet_map
    content {
    range_name    = "${each.value.secondary_address.name}"
    ip_cidr_range = "${each.value.secondary_address.cidr}"
  }
}
}


variables.tf
----------------
variable "project_name" {
    type = string
    default = "test"
}
variable "region" {
    type = string
    default = "us-central1"
}
variable "vpc_name" {
    type = string
    default = "gcp-vpc"
}
variable "subnet_name" {
    type = string
    default = "gcp-subnet"
}

variable "subnet_map" {
    type = map(object({
     name = string,
     cidr = string,
     sec =  map(string)
    }))\

// creating 2 different subnets, each having 2 different secondary addresses	
    default = {
        "sub1" = {
         name = "subnet01"
         cidr = "10.1.0.0/16"
         secondary_address = {
             "name" = "secondary01"
             "cidr" = "10.6.0.0/16"
			 }
	     secondary_address = {
             "name" = "secondary02",
             "cidr" = "10.7.0.0/16"
			 }        
        }
         "sub2" = {
         name = "subnet02"
         cidr = "10.2.0.0/16"
		 secondary_address = {
             "name" = "secondary03"
             "cidr" = "10.8.0.0/16"
			 }
	     secondary_address = {
             "name" = "secondary04",
             "cidr" = "10.9.0.0/16"
			 }
        }
    }
}

1. create one vpc
2. there will be 2 subnets created in the vpc
3. for each subnet there should be 2 secondary alias to be created. 

Could any one please help how to achieve this