DataTable.ext.iApiIndex is always 0?

I see DataTable.ext.iApiIndex is not assigned/set anywhere, but it's used from other functions as the index of this table:

/**
  * Index for what 'this' index API functions should use
  *  @type int
  *  @default 0
  */
"iApiIndex": 0,

It's used like this:

var oSettings = _fnSettingsFromNode( this[DataTable.ext.iApiIndex] );

So, http://jsfiddle.net/royling/uNvT4/7/ - I only get the result as 4 instead of 8.

Allan,

Can you help?

Regards,
Roy