Is there some way to block a path? (vertically) (SOLVED)

[G]

Hi there, I've found a problem.

I need to block a path with a door at one of my rooms, but, the "solid" property of the door as a character only works "horizontally" (blocking all the width of the sprite, but not the height). So I find that I've made an useless door, mainly because the player character oversteps it just moving one pixel up o down from the coordinates of the door. Which is quite disturbing.

Is there any way to block the path vertically without consuming much resources?

Cheers

[SSH]

Make a separate walkable area where the door is/will be and turn it on/off?

[G]

Thanks, but already solved it using regions and imagination. Though your method sounds smarter than mine.