Variable Persist for User Session

[v0xb0x]

With the help of Opserty, Danny, MoT3rror and Dismounted, I was able to get a non-vBulletin page to pass in 3 values into a vBulletin page via the query string.

Great.

I now would like to have those 3 variables persist for the length of the users session.

Different users will have different values for these variables. Some users may have the same values as others as well.

Here's the question: Is there an easy way to invoke a 'persist' state for variables that are declared in a global_start plugin?