javascript - How to open a window when a window is already open in extjs -

i want open new window window open. window opening @ of window open?? new extjs , using extjs 6.
model: true
bringtofront: true
both not working

here in image see when click on edit small window opening @ window want open @ front of window.
hope understand problem now

the method show() (tofront() also) trick you. here small example:

var = new ext.window({     title: 'a',      width: 200,     height: 200 }).show();  var b = new ext.window({     title: 'b',      width: 200,     height: 200 }).show();  a.show(); // or a.tofront(); 

there property tofrontonshow, true default.