Set global component by ID. How?

[bogong]

Hello all!
I need to make QML component available from anywhere by ID. Is there any way?
For example:

StackView {

	id: oStackView;
	width: parent.width;
	height: parent.height;
	anchors.top: parent.top;
	anchors.bottom: parent.bottom;
	anchors.left: parent.left;
	anchors.right: parent.right;
}

and from any *.qml file access to it something like this from JS:

...
oStackView.pop();
...