Storing a random value for re-use(?)

["Russell, Ken" <krussell@xxxxxxxxxxxxxxx>]

How would I solve this problem?

I want to write a simple procedure that chooses a random number and uses it 
two (or more) times in a procedure, then chooses another random number. Here 
is a simple example of what I might want to do., create a simple star pattern 
with randomly long rays extending out from the center.

Here is the wrong way to do it:

to star :length
repeat 36 [fd random :length bk random :length rt 10]
end

What I want to do is have the second random in the repeat procedure to be the 
same value as the first random value (so it would go back an equal distance as 
it went forward.

It seems like the first fd random value would need to be stored and re-used as 
a value for bk.

Is there a way to do this?

Thanks so much!

Ken Russell