Error 1151

Question

I am using as3 on flash cs6 and I have been trying to create a scene where the button to move onto the next scene is only available when all other interactivies have been clicked at least once. This is my coding that I am using:
backyard_door.visible = false;
var btnB:Array = ["door_1","door_2","door_3","f_book","on_light"];
for (var i:uint=0; i<btnB.length; i++)
getChildByName(btnB[i]).addEventListener(MouseEvent.CLICK,g);
function g(e:MouseEvent)
n = Math.max(n,n ^ (1 << (1 + btnA.indexOf(e.currentTarget.name))));
if (n==Math.pow(2,btnB.length+1)-2)
backyard_door.visible = true;
Error 1151 says that in this line :
for (var i:uint=0; i<btnB.length; i++)
that 'A conflict exsists with definition i in namespace internal'
can someone please suggest a way to solve this problem or link me to a source that may be able to help? Thankyou
Also I am an as3 newbie so please be gentle with me

Answer 1

If there is somewhere else in your code where you declare a variable named " i " that could be the reason for the error.  If you want to use it mutl;iple times for different loops at the same level within the code then declare it separately instead of within each loop.
var i:uint; // declare it separately
(for i=0; etc.... )  // do not declare it in the loop