<div dir="ltr">Hi Paul,<div><br></div><div>I used the same rea file in previous nek, which was working well. But the error occurs in the new code. I am wondering whether it's the compilation. Attached is the case files.</div><div><br></div><div>​<div class="gmail_chip gmail_drive_chip" style="width:396px;height:18px;max-height:18px;background-color:#f5f5f5;padding:5px;color:#222;font-family:arial;font-style:normal;font-weight:bold;font-size:13px;border:1px solid #ddd;line-height:1"><a href="https://drive.google.com/file/d/1MUug6TWYqVoyfvwYg72zjvreZo2_DsYe/view?usp=drive_web" target="_blank" style="display:inline-block;max-width:366px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-decoration:none;padding:1px 0;border:none"><img style="vertical-align: bottom; border: none;" src="https://ssl.gstatic.com/docs/doclist/images/icon_10_generic_list.png"> <span dir="ltr" style="color:#15c;text-decoration:none;vertical-align:bottom">pipe.tar</span></a><img src="//ssl.gstatic.com/ui/v1/icons/common/x_8px.png" style="display:none; opacity: 0.55; cursor: pointer; float: right; position: relative; top: -1px; "></div>​<br></div><div>Kind regards,</div><div><br></div><div>Jian</div></div>