How to allocate NSnumberFormatter to my class

Ok, so I have a class that I want to add an NSnumberFormatter to, The problem is I want to be able to access the object from anywhere within my class. Unfortunately, I don't see how to allocate it on the heap without constantly overwriting constantly. I overwrite my init method, but Xcode still doesn't like me trying to access it.

 

Ok, Xcode still does not see the NSformatter Object I allocated. When I go to send a message to it

[formatter (here)] Xcode behaves as if this variable "formatter" is undeclared.

Here is my init overwrite:

Code:

-(id) init
{
    if (self = [ super init]) 
    {
        NSNumberFormatter  *formatter = [[NSNumberFormatter alloc] init];
        [formatter setAlwaysShowsDecimalSeparator:YES];
        [formatter setGeneratesDecimalNumbers:YES];
        [formatter setDecimalSeparator: @"."];
         
        
        
        
    }
         
         return self;
         
}

These are both in my implementation file.