How do I make dynamically name session variables???

I want to create a group of session variables and have searched all over the net on how to name them dynamically.

I have a template website that has a table of clients that own businesses. Most clients have 1 business, but some have multiple businesses.

I am hoping to create a set of session variables that would hold a string (tel. number).

So it would look something like this:

session("tel1") = "494 999 9999"
session("tel2") = "394 994 3938"
session("tel3") = "494 999 9928"

I thought I could create a counter equal to the number of businesses, and as I looped through dynamically name my session variables..

but something like

var varx = "tel" & counter

session(varx)

does not work.

Can someone please help me?