At a guess i'd say the problem is that mewoarray is only defined as an array and you're using it as a 2d array.
Try this:
PHP Code:
function onCreated(){
this.meowarray = { };
for( temp.ay = 0; temp.ay < 64; temp.ay++ ){
this.meowarray[temp.ay] = {};
for( temp.ax = 0; temp.ax < 64; temp.ax++ ){
this.meowarray[ temp.ay ][ temp.ax ] = 1;
if( temp.ax == 2 && temp.ay == 3 ) echo( this.meowarray[ temp.ay ][ temp.ax ] );
}
}