Popup Promo Collection
1. In the theme editor (Customize) > click Popup Promo Collection
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General Settings
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Create metafieldhin
Access Custom Data > Collections
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Add definition
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This is Example
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1 => custom.coupon_code
2 => custom.coupon_image
3 => custom.promotion
Now you can access the collection and enter data for each collection to show promotion
Promotion
Coupon Image
Coupon
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