ImageJ/Fiji and Big Tiff file format problem

<p> but Big Tiff files should have version number 43 (). 42 is for normal 32-Bit Tiff files，。p>

because only Big Tiff can handle more than 4 GB. The problem is the version number (Byte number 3 and 4) of that file. The version number of the saved 6.3 GB tiff file is 42， I have a problem with Fijis Big Tiff file format. I don’t know if that’s a bug or if i just don’t understand it. I do the following with Fiji: I create a new Image with 16 Bit， the file should be in Big tiff file format， 2048x2048 Pixel and 768 slices (File-New- Image). If i save the new Image (File-Save as-Tiff) Fiji creates a 6.3 GB tiff file. As far as I understand it， but these files can have max. 4 GB. Can someone help me? 。