N/currentRecord Module
CurrentRecord.getMatrixHeaderValue()
Method Description: Gets the value for the associated header in the matrix.
Returns: number | Date | string | array | boolean
Supported Script Types: Client scripts For more information, see SuiteScript 2.0 Client Script Type.
Governance: None
Module: N/currentRecord Module
Since: 2016.2
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=CurrentRecord.getMatrixHeaderValue(options)

// Code Example 1

//Add additional code

//...

var value = objRecord.getMatrixHeaderValue({

    sublistId: 'item',

    fieldId: 'item',

    column: 12

});

//...

//Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_4637584433.html