Даже write() не надо :
X++:
menuNameUsr_CT = "MyMenu";
select firstonly userInfo
where userInfo.id == curuserid();
menuNameUsrUP = userInfo.startupMenu;
userInfo.startupMenu = menuNameUsr_CT;
infolog.getUserSetup().setUserSetup(userinfo);
infolog.runStartupMenu();
userInfo.startupMenu = menuNameUsrUP;
infolog.getUserSetup().setUserSetup(userinfo);