Map Warp Issues

[cantabileChaos]

I finally got my map changes to load, but now I can't get the warp to work. The map alteration is on the backwoods map and adds a path that goes off to the west. The path is supposed to lead to a new location, but walking to the edge of the map doesn't initiate a warp. The character just keeps walking and disappears out of bounds. Using Tiled to build a map, is it better to have the warps built into the map itself or should there be separate code in the content file. Also, what would be the format for each? I used the warp>string>"x y destination x y" format, but I'm not sure if that's correct.