Error creating 5-dimensional array

I want to create an array like so:

var world:int[,,,,];
world = new int[chunkX, chunkY, blockX, blockY, data];
// data is {0: type, 1: light level}

And it is giving me the error:

BCE0023: No appropriate version of ‘Boo.Lang.Builtins.matrix’ for the argument list ‘(int, int, int, int, int)’ was found.

How do i fix this/Get around this?

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