Local functions#

Make sure you have declared the function in the correct scope.
Message functions cannot be called if they are local functions.

Example#

public class Example : MonoBehaviour
{
    void Update()
    {
        // This is a local function.
        //  Don't put your function inside of another.
        void MessageFunction()
        {
            ...
        }
    }

    //  This is the correct scope for message functions.
    void MessageFunction()
    {
        ...
    }
}

I am still not getting a message.