Voice Recognition

Hello,

I am currently working on a project using UnityEngine.Windows.Speech. I have a problem trying to move my character because I think it has to be inside the Update method otherwise it doesn't update every frame and I get a jittery/stutter movement.

 //Declaration
 private string[] voiceCommands = { "Jump", "Forward" };
 private KeywordRecognizer t_KeywordRecognizer;

 // Initialisation in Start
 t_KeywordRecognizer = new KeywordRecognizer(voiceCommands);
 t_KeywordRecognizer.OnPhraseRecognized += OnPhraseRecognized;
 t_KeywordRecognizer.Start();

 public void OnPhraseRecognized(PhraseRecognizedEventArgs args)
 {
     [...]
     switch (args.text)
     {
 [...]
         case "Forward":
                 transform.position += transform.forward * Time.deltaTime * movementSpeed;
             break;
     }
 }

The jumping works fine, but the movement is like a small step and stops. However, if I put

 transform.position += transform.forward * Time.deltaTime * movementSpeed;

inside the Update method, the character moves forward with no issues.

Any ideas on how I can address this or what I'm doing wrong? :)

EDIT: Forgot to mention that if I call the OnPhraseRecognized in Update with "null" as parameter, it says it cannot convert null to PhraseRecognizedEventArgs