How to make a Funnel Shaped Particle system?

Here’s a project with the tornado. Everything you need is in the blueprints folder. You can adjust for looks/performance by adjusting the CSNumMeshes variable in the First Person Character. WASD movement. Right click is Jet up. V is Jet Forward. U and J change the tornado radius. Default is 0, hold U to make it descend. TGHJ moves the tornado on the XY plane relative to the player camera. Let me know if you have any questions. https://mega.nz/#!PA83mCTC!HvG9b9AqPZGcl7ITWKMrj0jKJe543woQTveFxHsHonQ