Parameters are not set by actions in Tableau.
You could consider allow user to select in a parameter and then this selection can control what will be shown.
Thanks for the reply. Yep that is what I'm currently doing. After the user interacts with primary sheet1, they then need to manually select the parameter value to display the secondary sheet1. Its working so I guess I should just leave well enough alone. However, from a usability perspective its not the greatest experience. I'd much rather have the secondary sheet1 display upon the user interacting with primary sheet1.
David, i'm almost sure there is an idea about setting parameters you can vote.