Specific pixel width or height with Image Viewer?

Is there a way to request that the image viewer display at a given pixel width or height rather than percentage?

Show "D:\Image.png" POS 1280,0 SIZE 960,1080
Show (gpsoft.com.au)
Script sample:
Can I make the Viewer Panel Open/Close, when a media file is Selected/Deselected? - Help & Support - Directory Opus Resource Centre (dopus.com)