These are the functions of the param, range and count in renas editor.
Credits to apollo for this.
Range = NPC speed; 0 is near player walk speed, 7 is stationary (no movement from the point you have set for spawning).
Param = Spawn Time for the NPC, however, if the npc is stationary the Param values 0-3 will allow you to set the direction the NPC will face (example Priest npc).
Count = The number of the same NPC you would like to spawn from the given X Y location. If the first NPC occupies the spawn location the server will determine an X Y adjacent to the spawn point to spawn the NPC.
Dont say this is wrong because its not. its been tested and used. and it works.