Triple sevens are read as spiritual completion and a sense of things clicking into place. Their link with slot machines is read as a wish for everything to line up, never as numbers to play.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.