Replace set method with add method
Replace set method with add method

According to Changelog for version 3.6

DirkHoffmann/indico,ThiefMaster/indico,indico/indico,DirkHoffmann/indico,mvidalgarcia/indico,mic4ael/indico,OmeGak/indico,OmeGak/indico,DirkHoffmann/indico,ThiefMaster/indico,mvidalgarcia/indico,pferreir/indico,DirkHoffmann/indico,ThiefMaster/indico,indico/indico,OmeGak/indico,mic4ael/indico,mic4ael/indico,pferreir/indico,ThiefMaster/indico,mic4ael/indico,pferreir/indico,indico/indico,pferreir/indico,OmeGak/indico,mvidalgarcia/indico,indico/indico,mvidalgarcia/indico