multiply all the line item rate with item quantity and add the total amount in a body field using beforesubmitfunction

AI generated answer (using internal Slack threads):

To multiply all the line item rate with item quantity and add the total amount in a body field using beforesubmitfunction, you can use the

setSublistValue

method in SuiteScript. Here is a sample code snippet:

javascript
function beforeSubmit(context) {
    var rec = context.newRecord;
    var lineCount = rec.getLineCount({sublistId: 'item'});
    var totalAmount = 0;

    for (var i = 0; i < lineCount; i++) {
        var quantity = rec.getSublistValue({
            sublistId: 'item',
            fieldId: 'quantity',
            line: i
        });
        var rate = rec.getSublistValue({
            sublistId: 'item',
            fieldId: 'rate',
            line: i
        });
        totalAmount += quantity * rate;
    }

    rec.setValue({
        fieldId: 'bodyfield', // replace 'bodyfield' with the actual field id
        value: totalAmount
    });
}

This function will iterate over each line item, get the quantity and rate, multiply them, and add the result to a running total. After all line items have been processed, it sets the total amount to a body field. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******