The maximum value for measure numbers would appear to be 99.
Is there a way of going higher without havin to resort to adding text
The maximum is much higher than 99. In NWC 2.1, the start can be as high as 1000. In Print Preview and on the printed page, it is not uncommon to have the measure numbers partially disappear as they may lie outside the printable area. You may need to adjust your margins using the Page Setup Command (http://ntworthy.com/nwc2/help/MNU_PAGESETUP.htm).
Sorry folks, Ive now got it working - I was obviouslt doing something wrong