Making an object disappear using the voice SDK (programming experience: beginner)

Hello all,

I am making a game where I want the player to enter a house. I am covering the house entrance with a game object which will be invisible. I want the object to disappear when players say a certain term or sentence, I am using the meta voice SDK but cannot figure out how to do this.

If I am right I need a script attached to the object that makes it disappear, a button input to actually record someone's voice, and an event handler.

I have already trained the utterances on Wit.ai