Create a Warning message box in APM policy before Logon Page

Hi Jinshu, What version of APM are you using? I've seen this on 11.4 - 11.6 (those I've worked on) In the VPE, click the + before the Logon Page select the General Actions (I'm sorry I don't remember the exact tab name but it's the last tab on the right "General Something") tab. In the list of actions on that tab, you would find Decision Box, Message box and other items there. Cheers!