Power Fx function
Logic, variables, and flow control
Top 12 most-used
If
Picks a result by condition.
What it does
Picks a result by condition.
The job: Branching, looping, and state — the glue between reading data and changing it.
Try this
Adapt this formula from the nextM365 reference hub:
If(Total > 100, "Big", "Small")How to use If
Start from the task, not the alphabet. If you are shaping rows for a gallery, reach for If 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.