diff --git a/resp/resp.go b/resp/resp.go
index f44db83..d05bdfa 100644
--- a/resp/resp.go
+++ b/resp/resp.go
@@ -43,23 +43,45 @@ func RE(c *gin.Context, err error) {
 
 func _r(c *gin.Context, r *res, args ...any) {
 	length := len(args)
-	switch length {
-	case 0:
-		break
-	case 1:
-		if msg, ok := args[0].(string); ok {
-			r.Msg = msg
-		}
-	case 2:
-		r.Data = args[1]
-	case 3:
-		r.Err = args[2]
-	case 4:
-		if code, err := cast.ToIntE(args[3]); err == nil {
-			r.Code = code
-		}
+
+	if length == 0 {
+		goto END
 	}
 
+	if length >= 4 {
+		goto H4
+	}
+
+	if length >= 3 {
+		goto H3
+	}
+
+	if length >= 2 {
+		goto H2
+	}
+	if length >= 1 {
+		goto H1
+	}
+
+H4:
+	if code, err := cast.ToIntE(args[3]); err == nil {
+		r.Code = code
+	}
+H3:
+	if es, ok := args[2].(error); ok {
+		r.Err = es.Error()
+	} else {
+		r.Err = args[2]
+	}
+H2:
+	r.Data = args[1]
+H1:
+	if msg, ok := args[0].(string); ok {
+		r.Msg = msg
+	}
+
+END:
+
 	if r.Msg == "" {
 		r.Msg = Msg(r.Status)
 	}
diff --git a/resp/resp_test.go b/resp/resp_test.go
new file mode 100644
index 0000000..8952b70
--- /dev/null
+++ b/resp/resp_test.go
@@ -0,0 +1,9 @@
+package resp
+
+import (
+	"testing"
+)
+
+func TestResp(t *testing.T) {
+
+}