correct bug in create multiple instances in one call

odoo.go

@@ -224,21 +224,31 @@ func getValuesFromInterface(v interface{}) map[string]interface{} {
 // Create new model instances.
 // https://www.odoo.com/documentation/13.0/webservices/odoo.html#create-records
 func (c *Client) Create(model string, values []interface{}) ([]int64, error) {
+	var args []interface{}
 	if len(values) == 0 {
 		return nil, nil
+	} else if len(values) == 1 {
+		args = []interface{}{getValuesFromInterface(values[0])}
+	} else {
+		vv := make([]interface{}, len(values))
+		for i := 0; i < len(values); i++ {
+			vv[i] = getValuesFromInterface(values[i])
+		}
+		args = []interface{}{vv}
 	}
-	var vv []interface{}
-	for _, v := range values {
-		vv = append(vv, getValuesFromInterface(v))
-	}
-	resp, err := c.ExecuteKw("create", model, vv, nil)
+	resp, err := c.ExecuteKw("create", model, args, nil)
 	if err != nil {
 		return nil, err
 	}
 	if len(values) == 1 {
 		return []int64{resp.(int64)}, nil
 	}
-	return resp.([]int64), nil
+	r := resp.([]interface{})
+	ids := make([]int64, len(r))
+	for i := 0; i < len(ids); i++ {
+		ids[i] = r[i].(int64)
+	}
+	return ids, nil
 }
 
 // Update existing model row(s).