I want to make the Background to an item. but when I do this, I can't see my Character, because it's behind the item.Help me, please!
An 'item'? What do you mean? Is it an object? If so, just move the object's baseline to the top of the screen, so the character will be drawn on top of it.
I think I know what you want, If something in the background is the "item" that you want, simply cut the sprite save it as an other graphic file and add it as a object in your inventory tool, later you put the object in the background.
The part that you cut replace it for the appropiate image. ;)
You've drawn a walkbehind instead of a hotspot. Change it in Room editor -> Settings, at the top left (you'll have to delete the walk-behind and redraw the area as hotspot, though).