可以通过组合OnUpdate和ChangeEndValue函数来实现这一点。在ChangeEndValue函数中，需要传递所需的可以更改/更新的Vector 3。

for (int col = 0; col < gridColumns; col++)
{      
    for (int row = 0; row < gridRows; row++)
    {
        if (gridPositions[row, col].tag == "empty")
        {
            int c_row = (row + 1) > 6 ? 6 : (row + 1);
            if (gridPositions[c_row, col].tag != "empty")
            {
                if (c_row < 6)
                {
                                
                    var moveTween = gridPositions[row + 1, col].transform.DOMoveY(EmptyBlocks[row, col].transform.position.y, 1f, false);
                    var updatedVector3 = new Vector3(gridPositions[row + 1, col].transform.position.x, EmptyBlocks[row, col].transform.position.y, gridPositions[row + 1, col].transform.position.z);
                    moveTween.OnUpdate(()=>moveTween.ChangeEndValue(updatedVector3, true));
                    gridPositions[row, col] = gridPositions[row + 1, col];
                 }
            }
        }
    }
}