How do I make a sprite disappear when a condition is true

When I drag and drop the object on the trash can the "right button" should appear for a brief moment and then disappear.

In the conditions for an event put all these conditions:

Disposable is overlapping trashcan

Icon Is Overlapping Trashcan

And for the action to that event put:

Icon set visibility to false

(Because you referred to the icon overlapping the trash can in the condition it should pick the proper icon for that trashcan.)

Then to make sure this is only when we are over the can the next condition is:

(X) Disposable is overlapping trashcan (press I to inverse condition to have red X)

Icon Is Overlapping Trashcan

Then the action is:

Icon set visibility to true

Hope this helps!

Thanks, It helped a lot.