Get the lineCount of attachements and notes

Goodafternoon,

is there a way to get the lineCount from attachment (mediaitem) and the notes('note')?

I wanted to create a script, that if there are any attachments and/notes a field get true, so the users can quickly see if there are any attachements and/or notes. before checking communication subtab.

I created below SuiteScript:

const beforeLoad = (context) => {

      log.debug('attachment and note script','loaded')

      

      var currentRecord = context.newRecord;

      var recType = currentRecord.type.purchaserequisition;

      if(context.Type == recType){

         let countOfAttachment = currentRecord.getLineCount({

          sublistId : 'mediaitem',

        });

        let countOfNotes = currentRecord.getLineCount({

          sublistId : 'note',

        });

       if(countOfAttachment >= 1) {currentRecord.setValue('custbody_xxw_attachement', true)};

       if(countOfNotes >= 1) {currentRecord.setValue('custbody_xxw_icn', true)};