To Add the string use (the strings should declared global):
Code:
Objective_Total_Blue += Objective_P;
To show the strings use:
Code:
GamePlay.gpHUDLogCenter(null, "Red Objective Total: {0} :: Blue Objective Total: {1} ", new object[] { Objective_Total_Red, Objective_Total_Blue });
But be aware not every player has a screenresolution of 1920*1080 or higher, so it would be better to show the strings with a timedelay.