Hi, how do I update the value of a progress bar? ``` js // Test #1 x = $.messager.progress({ title: "Processing", value: 5, text: "{value}%", interval: 0, closable: true }); x.progressbar(); x.progressbar('setValue',50); // Test #2 x = $.messager.progress({ title: "Processing", value: 5, text: "{value}%", interval: 0, closable: true }); x.progressbar({value: 50}); ``` Both kind of work but mess with the layout...