A method has the following hard coded string and I want to replace the @"Send Data" with a FB global that says "Hello World"

The FB Global is a CFMutableStringRef
This method below is in a .m file and included in the FB project

- (void) logData
{
      NSLog(@"Send Data");
}


dim as CFMutableStringRef   gCFMutableStringRef
gCFMutableStringRef = @"Hello World"  

The goal is effectively do this 

- (void) logData
{
     // insert method to get gCFMutableStringRef set in FB without the need to extern?
      NSLog( gCFMutableStringRef)
}