[Need Help] How to change the selected variant with code

Can someone tell me how I can change the currently selected variant with velo code.

What editor element do you want to change?

If it dropdown you can use a selectedIndex property

$w("#myDropdown").selectedIndex = 0;

The drop down element is in a wix product page not a custom created page so the drop down cannot be accessed with code.

This is why i try never to use apps → CUSTOM-MODE → BEST!