public class CPlayer : Hybrid
    {
        public TextBox inputTBox { get; set; }

        public CPlayer(TextBox InputTBox) : base(InputTBox)
        {
            inputTBox = InputTBox;
        }

        public void initiateStats()
        {
            proteinMeterMax = 125;
            proteinMeterCurrent = 125;
        }
    }

public class Hybrid
    {
        public TextBox inputTBox { get; set; }

        public bool stopOn = false;

        public Hybrid(TextBox InputTBox)
        {
            inputTBox = InputTBox;
        }

        public void runResult<T>(T hy) where T : Hybrid
        {
            stopOn = true;
        }
    }


CPlayer cy = new CPlayer(inputBox);

public void doSomething() {
cy.runResult(cy);

    if (cy.stopOn) {
        //I want something to happen when this is true. But it keeps returning false.
    }

}