issue with StringByReplacingOccurrencesOfString options:NSCaseInsensitiveSearch

The options:NSCaseInsensitiveSearch is crashing my app when I have it in the following. Does anyone know why this might be?

NSString* string3 = [[[[tvQ.text stringByReplacingOccurrencesOfString:@"\n"
    withString:@" " options:NSCaseInsensitiveSearch range:wholeString]
        stringByReplacingOccurrencesOfString:@"&" withString:@"and"]     
            stringByReplacingOccurrencesOfString:@"ç" withString:@"c"] 
                stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];

Error from X-Code: error: 'wholeString' no开发者_StackOverflow中文版t defined

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shouldn't your 'wholeString' be a string which you have to declare before the call of this function? or, if you want to search the whole string, then shouldn't it be your tvQ.text ?