How to output a partial model graphic?

Hello,

I'm writing a script that outputs a word document with information relative to some model. A section of this document shoud contain the model graphic, however, I need it to output only a part of the model, not the entire graphic.

I've tried the getPictureTiled() method, but I can't seem to get it to cut the image in the proper size.

Is there any way to perform this?

Thanks in advance.