例如以下代码
@interface MPADView : CPModuleView <IMBannerDelegate, IMInterstitialDelegate, MobiSageAdProductPlacementDelegate, DMPreRollAdViewDelegate, PBInterstitialDelegate>
{
SecondDownLabel *_countDownLabel;
UILabel *_membershipLabel;
MPMembershipView *_membershipView;
MediaPlayerButton *_volumeButton;
UIButton *_detailButton;
UIButton *_scaleButton;
int mediaType;
UIImageView *_upShadowView;
UIImageView *_downShadowView;
float lastVolume;
BOOL lastAding;
int advseq;
BOOL _needPlay;
YKJSONClient *_jsonClient;
YKImageClient *_imageClient;
NSString *_url;
id _boundaryObserver;
id _playObserver;
NSMutableArray *_seqs;
IMBanner *_adIMBanner;
IMInterstitial *_adIMInter;
UIButton *_closeBut;
int _isShowAD;
MobiSageAdProductPlacement *_adMobiView;
int _adType;
UIImageView *_ykAdImage;
UITapGestureRecognizer *_ykTap;
DMPreRollAdView *_dmPRView;
int _alLeftTime;
NSTimer *_alTimer;
PBInterstitial *_ckPBObj;
}
我想要在hook它并且改变_isShowAD值,应该怎么改呢?