ios - Why this prepare segue is not working? -

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when click tableview want send currentbook details viewcontroller "detailpage" , here not sending value?? why shows error?enter image description here

error : unknown receiver "tableview"

why creating 2 gmmdetailpage objects? also, should have self.tableview instead of tableview. better pass tableview prepareforsegues:sender: method so:

- (void)tableview:(uitableview *)tableview didselectrowatindexpath:(nsindexpath *)indexpath {
[self performseguewithidentifier:@"bookitem" sender:tableview]; }


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