Niagra - sample portion of static mesh

I have a particle dissolve effect working in Niagara.

The issue is that the effect happens to the entire mesh.

I am using a ‘Sample Static Mesh’ module under Particle Spawn.

What I need to have happen is for the effect to transition instead across the mesh.

If you picture a horizontal cylinder I want the cylinder to particle dissolve from left to right.

Is there any way to accomplish this in Niagara?