c.server.get not working in service portals

[kamade rohini]

I have a requirement where user should get informational message if he is trying to attach a file of more than 3MB on a portal.

I'm trying to get this functionality done over a widget itself.

below are my client controller and server script.

Client controller:

 function setAttachments(attachments, action) {

 if (currentUrl == 'https://fjglobaldev.service-now.com/esc?id=fj_sc_cat_item&sys_id=17ec23d1db29a85892d8e03cd3961924' && action=='added') {

alert('action inside: '+action);

            c.data.action = 'getGUID';

            c.data.attID = $scope.data._attachmentGUID;

            var id = c.data.attID;

            alert("scoped: " + $scope.data._attachmentGUID);

            alert('c.data.attID: ' + c.data.attID);

           alert('size1: ' + $scope.data.size);

var inputs={

action: 'getGUID',

            attID: id

}

           c.server.get(inputs).then(function(response) {

                alert('size: ' + $scope.data.size);

  c.server.update();

            });

        }

        $scope.attachments = attachments;

    }



Server script:

data._attachmentGUID = gs.generateGUID();

if (input && input.action == 'getGUID') {

data.final_size=0;

  gs.log("input.attID: "+input.attID,'rohini');

var att = new GlideRecord('sys_attachment');

        att.orderBy('sys_created_on');

        att.addQuery('table_sys_id',input.attID);

        att.query();

        while(att.next()) {

           data.size = att.size_bytes;

gs.log("data.size " + data.size, "rohini");

gs.log("Count1: " + att.getRowCount(), "rohini");

        }

    }



Now, I'm able to get size of attached of file on a server side in logs. but at the same I'm unable to fetch it on client side.