Hi @horacechan 

Ah, it doesn’t look as though there’s any actions currently for the NAS.io app that would allow you to link a file. So I’d suggest contacting our Support team to submit a new feature request for that type of action to be added. You can do that here: https://zapier.com/app/get-help 

In the meantime, if Nas.io’s API has an endpoint that would allow you to link a file then perhaps you could use a Webhooks action to do it - assuming supports basic authentication methods. Alternatively, if it requires more advanced authentication methods like OAuth then you might want to consider building a private integration with Nas.io on our Developer Platform. It’s more advanced so may not be an ideal solution, but we do have a list of trusted Zapier app developers and certified Zapier Experts that may be able to assist with that.

Hope that helps to get you pointed in the right direction. If you run into any further issues or questions do let us know!