val user = FirebaseAuth.getInstance().currentUser
val userid = user?.uid
mRef = FirebaseDatabase.getInstance().reference.child("users").child(userid.toString()).child("Address")
mRef.child(addkey.toString()).addValueEventListener(object: ValueEventListener {
            override fun onCancelled(p0: DatabaseError) {
            }

            override fun onDataChange(p0: DataSnapshot) {
                val useraddtag = p0.child("addTag").getValue(String::class.java)

            }

})