Import custom meta feild from shopify

Hello

i want to import custom meta feild;

its addtionnal images for variants located in Varation > Custom feilds > Variant-Gallery (Its files Type)

Check image

https://drive.google.com/file/d/1bfdcvDku8WOOyTvRNeycx4TJy0y6IgJl/view?usp=drive_link

i want to import theme in variation addcitionnal image (its Link type)

its works but file could not be imported in image link

could you help me please ?

Regards