Random Pool, how to?

[diefox]

simple question:

I have actives A,B and C, at a certain time each of those actives should get a random number from 1 to 10 but it should be unique.

Ex.: if activeA got number 2 activeB can get any number but 2, and activeC should get any random number that hasnt been assigned to A and B.

[Pineapple]

Here's an example I posted recently:
http://community.clickteam.com/threads/81797-Random-Pool-from-an-alterable-string