diff --git a/terraform/environments/dev/main.tf b/terraform/environments/dev/main.tf
index e14f0e7..135739f 100644
--- a/terraform/environments/dev/main.tf
+++ b/terraform/environments/dev/main.tf
@@ -28,7 +28,7 @@ module "compute" {
 
   instance_type = var.instance_type
   zone = var.zone
-  frontend_subnet_id = module.network.subnet_ids.frontend
-  backend_subnet_id = module.network.subnet_ids.backend
-  database_subnet_id = module.network.subnet_ids.database
+  frontend_subnet_id = module.network.subnet_ids["frontend"]
+  backend_subnet_id = module.network.subnet_ids["backend"]
+  database_subnet_id = module.network.subnet_ids["database"]
 }
\ No newline at end of file
diff --git a/terraform/environments/dev/variables.tf b/terraform/environments/dev/variables.tf
index c1996ea..127a56f 100644
--- a/terraform/environments/dev/variables.tf
+++ b/terraform/environments/dev/variables.tf
@@ -43,7 +43,7 @@ variable "project_id" {
 
 
 variable "instance_type" {
-  description = ""
+  description = "type d'instance de vm"
   type        = string
   default = "e2-micro"
 }
diff --git a/terraform/modules/network/main.tf b/terraform/modules/network/main.tf
index e54bb67..bbcfb0d 100644
--- a/terraform/modules/network/main.tf
+++ b/terraform/modules/network/main.tf
@@ -18,24 +18,24 @@ resource "google_compute_network" "vpc" {
 resource "google_compute_subnetwork" "frontend" {
   name          = "mon-frontend"
   network       = google_compute_network.vpc.id
-  ip_cidr_range = "10.0.1.0/24"
-  region        = "europe-west1"
+  ip_cidr_range = var.frontend_cidr
+  region        = var.region
 }
 
 # Sous-réseau
 resource "google_compute_subnetwork" "backend" {
   name          = "mon-backend"
   network       = google_compute_network.vpc.id
-  ip_cidr_range = "10.0.2.0/24"
-  region        = "europe-west1"
+  ip_cidr_range = var.backend_cidr
+  region        = var.region
 }
 
 # Sous-réseau
 resource "google_compute_subnetwork" "database" {
   name          = "ma-database"
   network       = google_compute_network.vpc.id
-  ip_cidr_range = "10.0.3.0/24"
-  region        = "europe-west1"
+  ip_cidr_range = var.database_cidr
+  region        = var.region
 }