  Let $\mathcal{A}$ be the class of unital separable simple amenable
$C$*-algebras $A$ which satisfy the Universal Coefficient Theorem for which
$A\otimes M_{\texttt{P}}$ has tracial rank zero for some supernatural number
$\texttt{p}$ of infinite type. Let $A\in \mathcal{A}$ and let $\alpha$ be an
automorphism of $A.$ Suppose that $\alpha$ has the tracial Rokhlin property.
Suppose also that there is an integer $J\geq 1$ such that
$[\alpha^J]=[\mbox{id}_A]$ in $KL(A,A)$, we show that
$A\rtimes_{\alpha}\mathbb{Z}\in \mathcal{A}.$
