Prefab animation works in preview, but not in game

I have created an animator controller which contains a blend tree of type "2D Freeform Cartesian". The blend tree holds two parameters 'Grip', and 'Trigger' and appears to animate the hand prefab as I would expect when I pass the prefab into the preview window like so :


I have added an animator and the 'Left Hand Animator' controller to the prefab :



Here is some of the initialisation code where the 'handGameObject' here is a created instance of the 'Left Hand Model' prefab that's instantiated.

Code (CSharp):

1.         handGameObject = Instantiate(handModelPrefab, transform);
2.         handAnimator = handGameObject.GetComponent<Animator>();

And here is the code I am using to update the animations 'Grip' and 'Trigger' parameters :

Code (CSharp):

1.     private void UpdateHandAnimation()
2.     {
3.         if (tgtDevice.TryGetFeatureValue(CommonUsages.trigger, out var triggerValue))
4.         {
5.             handAnimator.SetFloat("Trigger", triggerValue);
6.         }
7.  
8.         handAnimator.SetFloat("Trigger", 0.0f);
9.  
10.         if (tgtDevice.TryGetFeatureValue(CommonUsages.grip, out var gripValue))
11.         {
12.             handAnimator.SetFloat("Grip", gripValue);
13.         }
14.  
15.         handAnimator.SetFloat("Grip", 0.0f);
16.     }

The problem is, I cannot get the hand models to animate in game. I have checked that 'triggerValue' and 'gripValue' are getting populated correctly at runtime - which they are.
Is there something I am missing?

 

It's okay..... I was able to find the issue, I was being an idiot. The issue was in the code itself :
handAnimator.SetFloat("Trigger", 0.0f);
and
handAnimator.SetFloat("Grip", 0.0f);
should be within their respective else statements.