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 # isDesignVariable

 Last update: 16.07.2025 

abstract fun [isDesignVariable](is-design-variable.md)(which: [Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html)): [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)

Is the specified variable a design variable?

#### Return

true if yes, false if no

#### Parameters

whichthe name or index of the variable to get#### Throws

[IllegalArgumentException](https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html)if the name is not valid[IndexOutOfBoundsException](https://docs.oracle.com/javase/8/docs/api/java/lang/IndexOutOfBoundsException.html)if an index is invalid