Something along the lines of displaying variables like this
Set all variables to 0
VCEmodVariable > [Brick] [Var1] [set]
VCEmodVariable > [Brick] [Var2] [set]
VCEmodVariable > [Brick] [Var3] [set]
Make them random number between 0 and 10
VCEmodVariable > [Brick] [Var1] [Random] [10]
VCEmodVariable > [Brick] [Var2] [Random] [10]
VCEmodVariable > [Brick] [Var3] [Random] [10]
Display the "slotmachine" style number
Client > CentrePrint > [Your generated slot machine is :<var:br:var1><var:br:var2><var:br:var3>]
Could even do like jackpot style things with subsystem
VCEifValue > [<var:br:var1>] [==] [9] {2 2} - Not right subsystem value
OnVariableTrue > VCEifValue > [<var:br:var2>] [==] [9] {3 3}
OnVariableTrue > VCEifValue > [<var:br:var3>] [==] [9] {4 5}
OnVariableTrue > VCEmodVariable > [client] [credits] [add] [200]
OnVariableTrue > Client > [All the 9s! You win 200 credits! Your credits is now <var:cl:credits>]
Very cut down events, but hopefully that gives you the idea.