Hello, I am working on a client script which validates a field in the Item sublist on a Sales Order record. If the validation fails, I want to throw a dialog asking the user to correct the value in that field. below is a snippet:

if (sublistName === 'item') {
    if (sublistFieldName === 'custcol_start_date') {
        var start_date = currentRecord.getCurrentSublistValue({
            sublistId: sublistName,
            fieldId: sublistFieldName
        });

        var end_date = currentRecord.getSublistValue({
            sublistId: sublistName,
            line: line,
            fieldId: 'custcol_end_date'
        });

        if(!moment(start_date).isSameOrBefore(end_date)){
            
            dialog.alert({
                title: 'Start Date can not be after End date',
                message: 'Click OK to continue.'
            })

            return false;
        }
    }
}

return true;

When I deploy this code, the validation works and the dialog appears, but when I click OK on the dialog box, nothing happens and the screen kind of freezes there. What am I missing here? Is using a dialog box in this scenario not a good idea?

your code doesnt do anything else

ohh, I want to wipe out the value in the field and have the enter the correct value

you need to code that behavior

where would that behavior be in this code?

use setValue

I added the following after the dialog, but nothing happens. even the dialog does not appear now. this is a date field btw

currentRecord.setCurrentSublistValue({
                                    sublistId: sublistName,
                                    fieldId: 'custcol_start_date',
                                    line: line,
                                    value: null
                                });