On press start drag, on press stop drag. how?

Hello i have an object that i want to drag and drop with the same event.
Something like on press start drag and on press again stop drag.
Anyone can help me?
I’m sure it’s pretty simple with and if and else statment but i can’t find how to do that…
The best i have done so far was this:

on (press) {
startDrag(this);
}
on (release) {
stopDrag();
}

But i want to on press start drag then on press again stop drag.
anyone can help?

thanks