Randomly Pick a value from an array

How do i randomly pick a value from a given array.

I have an array where "On Start of Layout" i "Push back" some value into the array.

Later on in the game i would like to randomly select a value of this array.

i have done something like below (this action is executed with the following condition)

System countdown >= 1 (this is just a countdown timer).

System Every 1.5 Seconds

<img src="http://img402.imageshack.us/img402/7517/randomconstruct.png" border="0" />

When i play the game it only displays the randomNumber.

<img src="http://img7.imageshack.us/img7/3772/randomconstruct2.png" border="0" />

The array has 4 elements.

Use the & not +

ArcadEd

Thanks for the hint, however it still does not solve the problem

<img src="http://img526.imageshack.us/img526/3495/randomconstruct3.png" border="0" />

<img src="http://img405.imageshack.us/img405/1539/randomconstruct4.png" border="0" />

<img src="http://img706.imageshack.us/img706/2848/randomconstruct5.png" border="0" />

Set randomNumber to floor(random(charArray.width)). And do make sure your arrays size is not smaller than what you need.

What Vee41 says. Plus, make sure your array Height and Depth are at least 1, even if you are not using them. Having them at 0 caused me similar issues in the past.

vee41 & ArcadEd thanks for the hint. But i have found the problem. Instead of Push back, i should put it at front.

It seems this is what happen when i use "push back"

Array ["","","","","element","element","element"]

So when a randomNumber generates the number 0 - 4 it will returns 0 by default because there is nothing there.

If i use "push front" this is what happen

Array ["element, "element", "element", ....]

Thanks for the hint though.