These red errors are… When I erase the FBullCowGame in FBullCowGame::SubmitValidGuess error disappears. 
I can’t hardly stand it. I recoded and copypasted whole thing several times.
The code do not see the int32,my current try,guess and other things when I cover it all by {} 
Solved.
I created SubmitValidGuess definition from the beginning.