Custom Script parameters in SAP Build Process Automation

[eliasfa]

I am trying to figure out how to input and output custom variables in a custom script in SAP Build Process Automation. It seems that the input parameter is not inputting any value into the script and it is not outputting anything either. The error I receive when trying to use the output param is 

"Invalid Argument: CommonFunctions.set: no valid value provided"

The script(step 116 of the automation) is as follows:

function convertWarehouseNum(warehouseNumOfPlantToCopyFrom) {

    const match = warehouseNumOfPlantToCopyFrom.match(/^([a-zA-Z]+)(\d+)$/);

    if (!match) {

        throw new Error('Invalid input format');

    }

    const letter = match[1];

    const number = match[2];

    // Increment the number by 1

    const incrementedNumber = (parseInt(number, 10) + 1).toString().padStart(number.length, '0');

    // Return the new string with the incremented number

    const warehouseNum = letter + incrementedNumber;

    return warehouseNum;

}

The input parameter is Step115.warehouseNumOfPlantToCopyFrom (output param of previous step)

The output parameter is Step116.warehouseNum

Please let me know if there is a solution.

Thanks

[eliasfa]

Figured it out, new code had an error listed in the console but ran it anyways and it worked.

[eliasfa]

Figured it out, new code had an error listed in the console but ran it anyways and it worked.

var match = copiedPlant.match(/^([a-zA-Z]+)(\d+)$/);

if (!match) {

    throw new Error('Invalid input format');

}

var letter = match[1];

var number = match[2];

// Increment the number by 1

var incrementedNumber = (parseInt(number, 10) + 1).toString().padStart(number.length, '0');

//Return the new string with the incremented number

var warehouseNum = letter + incrementedNumber;

return warehouseNum;