Can my landlord charge for property tax and insurance within CAM charges on my commercial lease?

I have my own business insurance.
I carry my own business insurance.
My lease contains nothing pertaining to CAM charges at all. No mention of CAM charges.
I asked my landlord to see a copy of the tax bill and he hesitated and then asked why I needed to see it. I told him that it was my right and that I wanted to show my accountant. He said why? You cannot use it as a tax deduction. Then he said find out if your accountant really needs it and I will see what I can do. Something is up!

Yes they can. I wish they didn't. Just tell me how much my rent is. Don't surprise me with CAM charges that i have no control over and don't even know if they needed to be done.