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Hello! Simply as an example: ///////// Example 1 /////////// var arr:Array = new Array(); trace('Len: ' + arr.length); // Print: Len: 0 // Right! ///////// Example 2 /////////// var arr:Array = new Array("one"); trace('Len: ' + arr.length); // Print: Len: 0 // Error! ///////// Example 3 /////////// var arr:Array = new Array("one", "two"); trace('Len: ' + arr.length); // Print: Len: 2 // Right! Thank you.