Global variable in D365 FO X++

//Set the value

SysGlobalCache globalCache;

globalCache = ClassFactory.globalCache();

globalCache.set(strFmt("%1%2",curUserId(),"AtulYadav"), 0, "VALUETHATYOUWANT");

//Fetch the value

SysGlobalCache globalCache;

globalCache = ClassFactory.globalCache();

info(strFmt("%1",globalCache.get(strFmt("%1%2",curUserId(),"AtulYadav"), 0)));