Clear Clipboard

Clear Clipboard

1.4 Automatically clear clipboard data after 30 seconds (specify '0' to never clear clipboard automatically)
PAM360 uses the clipboard utility of browsers to copy passwords when you copy them from PAM360. By default, the copied passwords will be available for 30 seconds. In this option, specify the time in seconds after which the clipboard will be cleared and the copied password will no longer be available. If you specify 0, clipboard will not be cleared automatically.

This does not appear to work in any browser that we've tried. Any way to enable this functionality?