B4J Question B4XPages how to

This is likely very simple. I am trying to use B4XPages. My start page comes up at 600 x 600. When I change a page I want it to start at say 1000 x 300. I can set the view to 1000 x 300 using a variant. I removed the 600 x 600 variant.
But when switching to the new page that display is at 600 x 600. I can expand it to see the full 1000 x 300. But how do I get the new page to start at 1000 x 300?
 
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