how do I set a render resolution size

[cecithompson]

I have been trying to teach myself to rendering in Rhino 5 Vray 1.5. I have the 30 day demo. According to the threads and online directions I can find, I am doing what I should but it isn't working.

 

I can't get it to render any bigger than the test render size with a file size of 20k. I wanted to render 5600 by 3390.

 

In the Vray option editor I clicked the override viewport 5600 by 3390 and clicked the save render and named a .jpg.

 

Also in document properties i chose custom (rather than viewport resolution) with a size of 5600 by 3390.

 

To start the render, I have been hitting the "R" icon.

 

I appreciate your thoughts.