session name is the name of the session variable itself, you don't change this, what you do is change its value.
for example, when setting a session variable, you can do it directly, or use another variable.
$_SESSION["numberone"] = "5";
OR
$_SESSION["numberone"] = $row_rsvlProducts['ProductID'];
once you have set the session variable, you can now use this to filter a different recordset