Incident Activity Email Script

[tomaslindev]

Good morning,
I need the activity of the incidents (attached images, comments, etc.) to be reflected in the email templates.
I have created an email script to call it later in the email template and be able to add everything, but it doesn't work for me. I am attaching the script.

(function runScript(current) {
    var sysId = current.sys_id;  
    var attachments = [];
    var comments = [];

    var grAttachments = new GlideRecord('sys_attachment');
    grAttachments.addQuery('table_sys_id', sysId);
    grAttachments.query();

    while (grAttachments.next()) {
        attachments.push({
            name: grAttachments.file_name.toString(),
            size: grAttachments.size_bytes.toString(),
            url: GlideServletURL.getApplicationURL() + '/sys_attachment.do?sys_id=' + grAttachments.sys_id.toString()
        });
    }
    var grComments = new GlideRecord('sys_journal_field');
    grComments.addQuery('element_id', sysId);
    grComments.query();

    while (grComments.next()) {
        comments.push({
            user: grComments.sys_created_by.toString(),
            comment: grComments.value.toString(),
            created: grComments.sys_created_on.toString()
        });
    }
    return {
        attachments: attachments,
        comments: comments
    };
})(current);

Any ideas? Thank you very much in advance and best regards.