Deep Dive into Multirow variable sets about jace.pro HOT 4 OPEN

(function runMailScript(/* GlideRecord */ current, /* TemplatePrinter */ template,
/* Optional EmailOutbound */ email, /* Optional GlideRecord */ email_action,
/* Optional GlideRecord */ event) {
    
    function genericResource() {
        var itemGr = new GlideRecord("sc_req_item");
        itemGr.addQuery("sys_id", current.sysapproval);
        itemGr.query();
        
        if (itemGr.next()){
            var service = itemGr.variables.cscr_chooseService; //Providers
            var provChoices = itemGr.variables.cscr_providerChoices; //Create generic provider/resource    
            
            if (service == 'Providers' && provChoices == 'Create generic provider/resource'){
                
                template.print('<table border="1px solid black">');
                template.print( "<tr bgcolor='#ddd'align='center'>" );
                template.print("<td style='text-align:center;font-family:tahoma' colspan='10'><strong>Generic Provider/Resource</strong></td>");
                template.print( "</tr>" );
                
                template.print( "<tr>" );
                template.print( "<td style='font-family:tahoma'><left><b>Department </b></left></td>" );
                template.print( "<td style='font-family:tahoma'><left><b>Visit Type </b></left></td>" );
                template.print( "<td style='font-family:tahoma'><left><b>Block </b></left></td>" );
                template.print( "<td style='font-family:tahoma'><left><b>Duration(Minutes) </b></left></td>" );
                
                template.print( "</tr>" );
                
                
                var mrvs = itemGr.variables.generic_provider_resource;
                var ritm = itemGr.getUniqueValue();
                var rowCount = mrvs.getRowCount();
                for (var i2 = 0; i2 < rowCount; i2++){
                    var row = mrvs.getRow(i2);
                    
                    
                    var deptGenTbl = new GlideRecord('u_mc_sched_dept');
                    deptGenTbl.get("sys_id", row.cscr_generictbl_dept);
                    var deptGen = deptGenTbl.u_display_name;
                    
                    var visitTbl = new GlideRecord('u_mc_sched_sched_visit_type');
                    visitTbl.get("sys_id", row.cscr_generictbl_vsttype);
                    var visitGen = visitTbl.u_display_name;
                    
                    var blockTbl = new GlideRecord('u_mc_sched_blocks');
                    blockTbl.get("sys_id", row.cscr_generictbl_block);
                    var blockGen = blockTbl.u_display_name;
                    
                    
                    template.print( "<tr>" );
                    template.print( "<td style='font-family:tahoma'><left>" +deptGen+ "</left></td>" );
                    template.print( "<td style='font-family:tahoma'><left>" +visitGen+ "</left></td>" );
                    template.print( "<td style='font-family:tahoma'><left>" +blockGen+ "</left></td>" );
                    
                    
                    
                    template.print( "</tr>" );
                }
                template.print('</table>');
            } else {
                return;
            }
        }
    }
    
    genericResource();
})(current, template, email, email_action, event);

MRVS do not access non MRVS content
MRVS do not allow UI Policies to hide variables
MRVS, until NY, were not shown in the summary
MRVS do not allow certain types of variables to be used. This is described better on DOCS
MRVS cascade on Order Guides is not supported (why are you using an order guide, nevermind... it is what it is)
MRVS in emails are weird
Server-side access to the MRVS is weird
MRVS summarizer is only available on Service Portal