Is it possible to use the c_move command with beam particles?

What I need is that the laser beam particle always moves from its start position at vector(camera.x,camera.y-400,camera.z) or vector(camera.x,camera.y+400,camera.z) to the vector(camera.x+400, camera.y, camera.z-30)

c_move can do that but can it be used with beam particles?

Also the manual in the effect command mentions a Beam Length but I cannot find any description how to use it. Can someone shed some light on this?