The short answer to the question is that it is currently not possible to short UP using yupana. This is because yupana does not currently support this feature. However, it is possible to short UP using uNFTs, which will soon be available. uNFTs are a new type of token that are designed to enable users to short UP and other digital assets. By using uNFTs, users can gain exposure to UP without actually owning it, allowing them to benefit from changes in the market without having to own the asset. This provides a flexible way to gain exposure to UP without having to own it, allowing users to benefit from changes in the market without having to own the asset.