invalid receiver type 'CFTyperef'

[diyora]

Hello all,
I am newbie in cocoa.I am doing coding in cocoa touch.
I try code;
CFTypeRef address;
NSString *street = address objectForKey:(NSString*)kABPersonAddressStreetKey;

I get the output but it give me warning:invalid receiver type 'CFTypeRef'.

Thank you...

[kainjow]

I'm guessing you need to declare it as a ABRecordRef instead of CFTypeRef, but I'd need to see more code to make sure.