Post network connection script not running

Hoping someone can help here - I have a network tunnel configured for our users - originally when we provided this the HKCU\Software\F5 Networks\TrustedHosts wasn't being created - consequently users were being prompted to run scripts within the browser after the SSL tunnel was connected. We have since resolved this issue - however it has left us with some users who have inadvertantly selected the NO option to run the script and have then saved that. Does anyone know what reg key to change to enable the post connection script to run (ie to override what the user has previously set)

 

Thanks