Power Apps enables custom data types in Power Fx formulas
Microsoft has made user-defined types generally available in Power Fx, the formula language for Power Apps. These custom types, created with the new Type function in App. Formulas, let canvas apps handle structured data like records and tables more reliably. They work with user-defined functions for reusable logic and tie into ParseJSON to safely process JSON data from sources like SharePoint. New IsType and AsType functions check and convert data types to avoid errors. This rolls out in Power Apps Studio version 3.26044. Power Fx now matches modern languages with strong typing, building on recent updates to functions and components.
Canvas app formulas treated all data loosely before, so a Filter on a SharePoint list or Patch to a form could silently fail when records mismatched expectations. Beginners copied forum snippets that worked for 50 items but broke at 500, turning simple galleries into debugging nightmares. Custom types enforce structure upfront, so your expense tracker data stays consistent across screens and functions. Apps scale without surprise errors, making it feasible to build team tools that handle real volumes instead of prototypes that crumble.
Analysis
This is your quiet escape from formula copy-paste hell – skip it now and your growing SharePoint app turns into unfixable spaghetti later. Open studio today, define a Type for your gallery items like an expense record with fields for date, amount and approver, then rewrite one Filter or Patch using it.
Pulse published by Collab365 Spaces. Cite as "Power Apps enables custom data types in Power Fx formulas", Collab365 Spaces. 2 sources referenced.