C++ Help (Unreal Engine 4)

I am working on an assignment in Unreal Engine 4. I am taking the 'Puzzle' C++ template and making it into a tic tac toe game but am stuck on trying to add the squares that are generated to an array that is then called to check for 1 of the 8 possible victory statuses. I got most of the assignment completed but would appreciate some help with the rest. I'll upload what I have so far. The assignment details are as follows~

-modify the behavior of the template to implement a 2 player tic-tac-toe game.

-when player1 clicks a block, it turns yellow. When player2 clicks a block, it turns red.

-if a line of 3 blocks of either team is detected, the blocks of the line turn white and an appropriate message is displayed to the debug console. (either Player 2 wins or Player 1 wins);

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Project Source Code:

Link : https://drive.google.com/file/d/16-uEP500IVYyeRq4c23MT2S5rCO1S-97/view?usp=sharing

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