Power Fx function
Complete A–Z reference
Param
Reads launch parameters.
What it does
Reads launch parameters.
The job: Every function, signal, and operator entry in the canvas-apps reference.
How to use Param
Start from the task, not the alphabet. If you are shaping rows for a gallery, reach for Param alongside the other data functions in its group; if you are saving, navigating, or changing state, use it on an event such as a button OnSelect rather than in a display property. When a formula misbehaves, check for a blank value where you expected text, then confirm the behaviour against the examples in the Power Fx function reference hub.
New to the language itself? Read What Is Microsoft Power Fx? first, then come back here when you need this specific tool.
Related functions
ParentReaches the container's properties.ParseJSONJSON text turned into usable data.PatchCreates or edits data source records.PDFCurrent screen exported for documents.PiThe constant pi.PlainTextStrips markup down to plain text.PowerA number raised to a power.PrintOpens the print dialog for a screen.