Disable specific icon in toolbar

how to disable a specific icon in "current figure toolbar" alone in matlab. I am working with GUIDE. if i use the command:- h=findall(gcf,'ToolTipString','x'); set(h,'visible''off'); Here consider X is the icon. After execution of this command the icon in all figure is getting deleted.. I dont want this to happen. Only In current figure which is opened, the icon should disappear.