printing on glossy paper

Hi everyone

I've been trying to set my printer so that I'm able to print on glossy paper in A4 size. But my printer won't allow me to do this as it says the size doesn't match the paper type. I have tried just using regular paper settings but when I do this the black ink smudges and I am told when set to glossy paper the black ink won't smudge. Does anyone know how I can make my printer understand that I'm using an A4 piece of glossy paper and not regular sized photo paper? Sorry if this question seems stupid.

I'm using a Pixma MG2550

Thanks