I had a minute to open the player UI I referred to. The pieces that may help you are:
Code:
<Pieces>PW_Target_HP</Pieces>
<Pieces>PW_TargetPercentage</Pieces>
<Pieces>PW_TargetPercentHold</Pieces>
<Pieces>PW_HoTT_HP</Pieces>
<Pieces>PW_HoTTPercentage</Pieces>
<Pieces>PW_HoTTPercentHold</Pieces>