Protecting Parameters passed to stored process from VA

[Crysis85]

Hello, I've created a simple stored process that by selecting a row in a table on a VA Report pass 2 parameters to a stored process that extract the content from a table not loaded on memory filtered by those two parameters. The store process works. The problem is that when i click on the report's table to run the stored process a new page is opened on the browser and the url is clearly visible (and modifiable) so if one user is quick enough can intercept the url to the stored process and change the parameters passed (by doing so it could access data he doesn't have access to. Is there a way to make it so that the parameters passed to the stored process aren't accessible outside the report? In other words, that the only way to make the sp run is by clicking the report's table. Thank you, Roberto