How to let Sprite emitter spawn along Mesh particle?

Hello,

I have a problem with a Sprite emitter which somehow doesn´t do it´s supposed role. I made a Mesh Particle (A3) inside Niagara which is falling down and a Smoke Particle should sort of follow it along the width of the Mesh. As you can see i set the Smoke sprite to imitate the Mesh to get an accurate result(A2). But when i bring them together in a system (A1) and set the events, it seems it spawns to a complete different effect. After some playing with the setting i know that it spawns the particles at the pivot point of the Mesh. I would like to know how to change it to the whole side of the Mesh.