Reverse Polish Notation
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| Applicable |
|---|
| MSFS2024 |
| MSFS2020 |
| MS Flight |
| LM P3D5 |
| LM P3D4 |
| LM P3D3 |
| LM P3D2 |
| LM P3D |
| FS World |
| FSXSE |
| FSXA |
| FSX |
| FS2004 |
| FS2002 |
| XP11 |
| XP10 |
| XP9 |
Reverse Polish Notation, or RPN, is a way to write down formulas. It is used in MSFS for gauges, model behaviors, and in mission scripts for PropertyTriggers, ProximityTriggers, and Calculators.
The documentation on RPN thoroughly explains how it works.
Mission Script Elements that use RPN
| Calculator |
| PropertyTrigger |
| ExecuteRPNAction |
Examples
Changing a variable
You can change a variable with RPN code in a Calculator or Execute RPN Action.
1800 (>X:VariableToChange)
This example changes the variable VariableToChange to 1800.
If, Else construction
(condition) if{this} els{that}
If the condition is true, the formula will become {this}, otherwise it will become {that}.
