Creator Indesign to Kindle Image Size

Hi there,
I work in inDesign because i format book for print and ebook and i like to have one master file. Been using Kindle export plugin and i really like it except that i have zero control over the size of images. I've tried higher rez images in the indesign file, scaling them up but the image is always the same size when i export to kindle.
If there is someone out there that knows any solution to this i would be really grateful.

Thanks,