Changing particle emission rate via C# script

Thanks, worked like a charm!

'rate' is obsolete in 2017 beta

Could you perhaps go into more detail as to how to do this? This is my code: private Vector3 lastPosition; private bool mouseWasDown = false; private ParticleSystem particleObjects;

     private float min = 37.0f;
     private float max = 45.0f;
     private float dif = 8;
     private float mag = 37.0f;
     private float val;
     private float floor = 120.0f;
     private float ceiling = 1000.0f;
     private float room = 880.0f;
     void Start ()
     {
         dif = max - min;
         room = ceiling - floor;
         particleObjects = GetComponent<ParticleSystem> ();
         var em = particleObjects.emission.rate;
         em.mode = ParticleSystemCurveMode.Constant;
     }
     void Update () 
     {
         if (Input.GetMouseButton (0)) {
             if (mouseWasDown == false) {
                 lastPosition = Input.mousePosition;
                 mouseWasDown = true;
                 return;
             }
             Vector3 mouseDelta = Input.mousePosition - lastPosition;
             mag = (Mathf.Clamp (mouseDelta.magnitude, floor, ceiling) - floor) / room;
             val = mag * dif + min;
             var em = particleObjects.emission.rate;
             em.constantMax = val;
             em.constantMin = val;
         } else {
             mouseWasDown = false;
         }
     }

Where am I going wrong?

or just keep it as curve ins$$anonymous$$d of constant and create a curve for yourself (ParticleSystem.MinMaxCurve), then change the rate from min up to max by evaluate.