Transfer parameters from one page to another

Hi,
i cteate two pages ( a and b) by Visual Builder.
page a contains a button and a ListGrid,
page b contains some sample elements.

both of the pages are xml page(a.ui.xml, b.ui.xml), not js.

the button of page a, have a click function: when it clicked, load page b.

the question is：i load page "a.ui.xml" through screenLoader, how can i dynamic load "b.ui.xml" when the button's click function was fired?

if i can dynamic load "b.ui.xml" by the button of page a, then, how can i transfer data to page b?

is this idea correct? can i achieve it?

Any tips will thank you very much.