Defining a random x

[Damascus]

I want to set a random variable from 1 to 4 that will determine which entity out of 4 is activated, but I'm not sure how to connect the two things. But, I don't know how to call x when I am setting the script.

I know to set the random variable, I want to do:

SetLocalVarInt("OrbPiece", RandInt(1,4));

And to activate the orb when you enter the corresponding orb piece, doing something like this:

SetEntityActive("orbpiece_emerald_"+x, true);

Where x is set equal to the integer generated by the first script. So how do I set them equal to each other?