Pop one number representing the maximum value (not included) that the random() function can return, push the generated value on the stack. n1 should not be zero or negative.
Since version 5, you should use the Math.rand() member function instead of this action.
Recently, Linden Lab changed the way they create names for new avatars for Second Life. This has caused issues with SLiteChat but a simple work around can resolve this problem for you.