Does upper.io/db/mongo support regular expression queries?

  golang, question

RT
https://godoc.org/upper.io/db/mongoA find function is provided, but I want to do fuzzy matching.func (self *Collection) Find(terms ...interface{}) db.Result
Attempt to pass parameters through the following methods

temp := map[string]string{
 "$regex:":  ".*",
 }
 count, _ := col.Find(db.Cond{"url": temp}).Count()

However, regular matching cannot be performed

Why yours$regexThere’s another one in the back.:Colon?