How to display property on a grid or a object?

[cupenoruler (cupen noruler)]

Sorry for bother you. I use object layer for it, but it’s not works, so I issue a new question.

[Scripting API] How to associate the coordinates of object layer and tiled layer?

Is there any API for it? My original need was just add a displayable custom property for tile, also for empty tile. So I make a object layer for it, but the coordinates between them was quit differentce.