I want to use a button to pop up the dialog box for user login. I read the manual to use UserLogonDialog, but it failed to test successfully. Can you give me a sample, thank you

The function must be called from a script and then the code must wait for the return value becoming invalid, e.g.

...
[
  WaitObj;
]
...

Init [
  { When triggered display the logon dialog }
  If Trigger Wait;
  [
    WaitObj = SecurityManager\UserLogonDialog(Invalid, Invalid, TRUE, FALSE);
  ]
]

Wait [
  If !Valid(WaitObj);
  [
    { Do Something }
  ]
]