Get record value in code snippet on view page

Two solutions here:

1. Have a virtual field in your SQL query like select '' as messagefield, put that on your view in Page Designer and have $value for View to your liking.

   
   

2. Push the field values to a session variable and echo that. If your session variable is empty, you have not filled it with the record value in an event before.

   
   

Sessions in php can be used as arrays.
Probably you are not defining your session in the correct event or you're not writing the code correctly - without some debug messages I can't tell.
You should define the session array in the view page "Process record values" event and it should work - it works in my case anyway - maybe vaultid is not a key in that array because it not written like that? - if you var_dump the $_SESSION["currentRecord"] array what do you see?

You cannot directly access field values in the code snippet, code snippets are not events and run in their own context.

You can do however what @cristi suggests, use Process Record Values event to save $values array in a session variable and then access this array in your code snippet.