extracting block attributes

I am extracting attrbute values to a file (using 'attext' and 'C'), but  results are not right.

Using BL:XCALE gives right x-scale, but BL:YSCALE and BL:ZSCALE gives always 3.

Is this a bug or am I doing something wrong here?

(edit: Seems also that BL:Z gives the same value as BL:X...)

Thanks in advance!