schema index not work with 23.1.0

[cxcel]

schema := db.Schema()
schema.Type("User", func(user *dqlx.TypeBuilder) {
	user.String("name").IndexTerm()
	user.String("phone")
})


err = schema.Alter(ctx, dqlx.WithDropAllSchema(true))
if err != nil {
	panic(err)
}

schema index not work.
get chema from https://play.dgraph.io/?local :
: string .
: string .