I am a tenant and lost my keys

[Peter Cooke]

I am a tenant and I lost they key to my the entrance of my apartment building.  I went to them to try and get a replacement key but my landlord is trying to make me pay mid-lease term to re-key the apartment building doors and pay for the cost of all new keys for the entire building.  They also will not give me a new key unless I sign that I will pay to re-key.  Do I have to pay this fee or how can I fight it?  This is all the lease says about keys below...

[Jill F.]

Go borrow the key from a neighbor, make a copy and tell the A-hole you found the key.