Hi I am setting a discount item in suite script like this:

objRecord.selectNewLine({
			sublistId: 'item'
		});

		log.debug('discount >>>>>', discountid);

		objRecord.setCurrentSublistValue({
			sublistId: 'item',
			fieldId: 'item',
			value: discountid
		});

		objRecord.commitLine({
			sublistId: 'item'
		});

The amount of the discount is being determined by this discountid. Is there a way overwrite the amount in suite script? maybe something like this:

objRecord.selectNewLine({
  sublistId: 'item'
});

log.debug('discount >>>>>', discountid);

objRecord.setCurrentSublistValue({
  sublistId: 'item',
  fieldId: 'item',
  value: discountid
});

objRecord.setCurrentSublistValue({
  sublistId: 'item',
  fieldId: 'amount',
  value: 200
});

objRecord.commitLine({
  sublistId: 'item'
});