diff --git a/engine/worker/builtin.go b/engine/worker/builtin.go
index ccd3bad1af..ee99040b80 100644
--- a/engine/worker/builtin.go
+++ b/engine/worker/builtin.go
@@ -67,6 +67,23 @@ func (w *currentWorker) runBuiltin(ctx context.Context, a *sdk.Action, buildID i
 	return f(w)(ctx, a, buildID, params, secrets, sendLog)
 }
 
+func cdsEnvVartoENV(p sdk.Parameter) []string {
+	var env []string
+	if !strings.HasPrefix(p.Name, "cds.env.") {
+		return nil
+	}
+
+	pName := strings.TrimPrefix(p.Name, "cds.env.")
+
+	envName := strings.Replace(pName, ".", "_", -1)
+	envName = strings.Replace(envName, "-", "_", -1)
+	env = append(env, fmt.Sprintf("CDS_ENV_%s=%s", strings.ToUpper(envName), p.Value)) // CDS_ENV_MYSTRINGVARIABLE
+	env = append(env, fmt.Sprintf("CDS_ENV_%s=%s", pName, p.Value))                    //CDS_ENV_MyStringVariable
+	env = append(env, fmt.Sprintf("%s=%s", pName, p.Value))                            // MyStringVariable
+	env = append(env, fmt.Sprintf("%s=%s", strings.ToUpper(envName), p.Value))         // MYSTRINGVARIABLE
+	return env
+}
+
 func (w *currentWorker) runGRPCPlugin(ctx context.Context, a *sdk.Action, buildID int64, params *[]sdk.Parameter, stepOrder int, sendLog LoggerFunc) sdk.Result {
 	log.Debug("runGRPCPlugin> Begin buildID:%d stepOrder:%d", buildID, stepOrder)
 	defer func() {
@@ -90,6 +107,7 @@ func (w *currentWorker) runGRPCPlugin(ctx context.Context, a *sdk.Action, buildI
 			if p.Type == sdk.KeyParameter && !strings.HasSuffix(p.Name, ".pub") {
 				continue
 			}
+			envs = append(envs, cdsEnvVartoENV(p)...)
 			envName := strings.Replace(p.Name, ".", "_", -1)
 			envName = strings.ToUpper(envName)
 			envs = append(envs, fmt.Sprintf("%s=%s", envName, p.Value))
diff --git a/engine/worker/builtin_script.go b/engine/worker/builtin_script.go
index 75384afc68..0ca8dffb7a 100644
--- a/engine/worker/builtin_script.go
+++ b/engine/worker/builtin_script.go
@@ -155,6 +155,9 @@ func runScriptAction(w *currentWorker) BuiltInAction {
 				if p.Type == sdk.KeyParameter && !strings.HasSuffix(p.Name, ".pub") {
 					continue
 				}
+
+				cmd.Env = append(cmd.Env, cdsEnvVartoENV(p)...)
+
 				envName := strings.Replace(p.Name, ".", "_", -1)
 				envName = strings.Replace(envName, "-", "_", -1)
 				envName = strings.ToUpper(envName)
diff --git a/engine/worker/builtin_test.go b/engine/worker/builtin_test.go
new file mode 100644
index 0000000000..9dd820e6dd
--- /dev/null
+++ b/engine/worker/builtin_test.go
@@ -0,0 +1,63 @@
+package main
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/ovh/cds/sdk"
+)
+
+func Test_cdsEnvVartoENV(t *testing.T) {
+	type args struct {
+		p sdk.Parameter
+	}
+	tests := []struct {
+		name string
+		args sdk.Parameter
+		want []string
+	}{
+		{
+			args: sdk.Parameter{
+				Name:  "cds.env.MyStringVariable",
+				Value: "value",
+			},
+			want: []string{
+				"CDS_ENV_MYSTRINGVARIABLE=value",
+				"CDS_ENV_MyStringVariable=value",
+				"MyStringVariable=value",
+				"MYSTRINGVARIABLE=value",
+			},
+		},
+		{
+			args: sdk.Parameter{
+				Name:  "cds.env.My.String.Variable",
+				Value: "value",
+			},
+			want: []string{
+				"CDS_ENV_MY_STRING_VARIABLE=value",
+				"CDS_ENV_My.String.Variable=value",
+				"My.String.Variable=value",
+				"MY_STRING_VARIABLE=value",
+			},
+		},
+		{
+			args: sdk.Parameter{
+				Name:  "cds.env.My-String-Variable",
+				Value: "value",
+			},
+			want: []string{
+				"CDS_ENV_MY_STRING_VARIABLE=value",
+				"CDS_ENV_My-String-Variable=value",
+				"My-String-Variable=value",
+				"MY_STRING_VARIABLE=value",
+			},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := cdsEnvVartoENV(tt.args); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("cdsEnvVartoENV() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}