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 # DataHistoryVariableStruct

 Last update: 16.07.2025 

public class [DataHistoryVariableStruct](index.md)

This object is used to pass a variable's data and metadata to the addVariableStructs function for data history, which sets the results for a run. For more information see [addVariableStructs](../-data-history/add-variable-structs.md).

## Constructors

[DataHistoryVariableStruct](-data-history-variable-struct.md)constructor()## Properties

NameSummary[index](--index--.md)open var [index](--index--.md): [Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html)  
Either a 0 based index to the Variable, or the name of a Variable.[isModified](is-modified.md)open var [isModified](is-modified.md): [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)  
Whether this value's modified flag is set.[isValid](is-valid.md)open var [isValid](is-valid.md): [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)  
Whether this value is valid.[metadata](metadata.md)open var [metadata](metadata.md): [DataHistoryVariableMetadataStruct](../-data-history-variable-metadata-struct/index.md)  
The metadata for the Variable[varValue](var-value.md)open var [varValue](var-value.md): [Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html)  
The value of the Variable.