How to maintain dimension size?

 From:  Matadem 14 Jun  (4 of 6) 
11764.4 
In Moi3d I have changed the dimension size to what I needed.
but when using the script it saves it small.

Tnx!
Image Attachments:
Size: 6.6 KB, Downloaded: 18 times, Dimensions: 186x133px
Size: 41.5 KB, Downloaded: 18 times, Dimensions: 461x355px