Navigate the images in gallery from outside buttons

Question:
i want to design buttons to navigate between images in gallery, how i do it?

Product:
Wix studio editor

What are you trying to achieve:
something like product in some colors, and the visitor choose which color now to see

What have you already tried:
i saw there is option to set currentItem, but it only when hasCurrentItem in the capatibilies is true, and at me it is false, i dont know how to manage it

Additional information: