Landscape Grass / Landscape Material Issue

Hey, Im basically trying to create a material where landscape grass is added in a masked area, but im having some trouble with the positioning.

Basically the grass is getting offset whenever I use absolute world position, but when I use landscape coordinates it works as Im intending. Im just wondering why this happens when using absolute world position, and if anyone could suggest a solution, thanks.

It happens because your landscape is not positioned straight in the origin of the world.
Add an amount, that corresponds to offset of your landscape actor in the world, to your coordinates.