how should I modify fields in a beforeSubmit function? should I load and save?

AI generated answer (using internal Slack threads):

In a beforeSubmit function, you can modify fields directly on the newRecord object without needing to load and save the record. This is because the beforeSubmit function is triggered before the record is saved, so any changes you make to the newRecord object will be reflected when the record is saved. Here's a simple example of how you can modify a field in a beforeSubmit function:

javascript
function beforeSubmit(context) {
    var newRecord = context.newRecord;
    newRecord.setValue({
        fieldId: 'custrecord_my_custom_field',
        value: 'New Value'
    });
}

In this example, 'custrecord_my_custom_field' is the ID of the field you want to modify, and 'New Value' is the value you want to set for that field. As for hiding fields based on a value, this cannot be done in a beforeSubmit function as it is too late at this point. The record is already loaded in the browser. If you need to hide fields in real-time, as the user changes values, you would need to use a client script. This can be done on the saveRecord function in Clientscript or on beforeLoad. Also, yes, you can have a beforeLoad and beforeSubmit in the same script. You can even have an afterSubmit in that very same script as well! ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******