I created my own object, PKSurvey. In the interface of the View Controller I can define a pointer to it, then in a method I can alloc it and have an instance. How do I keep the instance beyond the method where it was allocated? I assign values in one method and want to be able to use those values in other methods. Should I allocate it in the viewDidLoad method or should I do it somewhere else?

@interface DIrectionalDrillerViewController : UIViewController {

 PKSurvey *Survey=[PKSurvey new];


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- (void)viewDidLoad {

 [Survey new];