Hello,
I want to set a maximum number of items from an Airtable list. Is possible ?
Someone have a list of external collection formula ? Thanks
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Good day sir, how to contact you?
I’ve been watching your youtube tutorials and tips for adalo.
I have 2 external collection in adalo , category and subcategory both from airtable,
i have list of categories in homepage , and when clicked the user will go to other page showing list of subcategories , what will I put in query so that the list will only show subcategories belong on specific category?
Welcome to the community @noy! 
You can contact Patrick through the experts page! : Find Freelance Adalo Designers, Developers, & Agencies
Adalo docs : Filtering Airtable Lists | Adalo Resources
Useful thread : Filter (airtable populated) list by search term?
Similar video made by me : Airtable Names start with a letter.mp4 - Google Drive
You can store the category name in a input or in a user property and filter the sub-list with that input or property but let me ask you this, how you built your db on airtable? Some screenshots or a video?