Change the stimulus of P3 speller

[Srujana_Buddi11]

Hi,

I am trying to integrate BCI2000 and Unity 3D. I have a game designed in Unity 3D and I would like to get data from subject when he plays the game and I want to add markers to the BCI2000 neural data depending on the Unity input/triggers. So I am trying to change the stimulus of the P3 speller to the unity game. I tried App connector and I am able to get data from BCI2000 through udp connection but I am not sure how to add markers to BCI2000 data.
There is a lot of information available on the wiki, but I am having a hard time filtering what's important. Any help would be appreciated.

Regards,
Srujana