CreateSmoke(const Float:ground_pos[3])
{
   new smoke = CreateEntityByName("env_smokestack");
   if (smoke < 1)
   {
    LogError("env_smokestack error");
    return -1;
   }
   DispatchKeyValueVector(smoke, "origin", ground_pos);
   decl String:smoke_name[20];
   Format(smoke_name, 20, "smoke_%d", smoke);
   DispatchKeyValue(smoke, "targetname", smoke_name);
   DispatchKeyValue(smoke,"BaseSpread", "100");
   DispatchKeyValue(smoke,"SpreadSpeed", "70");
   DispatchKeyValue(smoke,"Speed", "80");
   DispatchKeyValue(smoke,"StartSize", "100");
   DispatchKeyValue(smoke,"EndSize", "2");
   DispatchKeyValue(smoke,"Rate", "30");
   DispatchKeyValue(smoke,"JetLength", "400");
   DispatchKeyValue(smoke,"Twist", "20");   
   DispatchKeyValue(smoke,"RenderColor", "255, 255, 255");   
   DispatchKeyValue(smoke,"RenderAmt", "255");
   DispatchKeyValue(smoke,"SmokeMaterial", "particle/particle_smokegrenade1.vmt");
   DispatchSpawn(smoke);
   AcceptEntityInput(smoke, "TurnOn");
   return smoke;
}

DispatchKeyValue(smoke,"RenderAmt", "255");