ios : how to insert null value into sqlite with fmdb - ios

Question

my sqlite table structure is :
CREATE TABLE "location" ("latitude" DOUBLE,"longitude" DOUBLE,"date" DATETIME,"locationDescription" VARCHAR,"photopath" VARCHAR,"placemark" BLOB,"wheelId" INTEGER,"wheelSize" DOUBLE,"frontWheelx" DOUBLE,"frontWheely" DOUBLE,"rearWheelx" DOUBLE,"rearWheely" DOUBLE)
and now I want to insert one record into the table, insert column : ( date , photopath , wheelId , wheelSize , frontWheelx , frontWheely , rearWheelx , rearWheely ) and ignore column : (latitude , longitude , locationDescription , placemark)
my code is :
BOOL succeed = [lunGaiDataBase executeUpdate:#"insert into location (date, photopath, wheelid, wheelsize, frontwheelx, frontwheely, rearwheelx, rearwheely) values(?,?,?,?,?,?,?,?)",
location.date,location.photoPath, location.wheelId,location.wheelSize,location.frontWheelx,location.frontWheely,location.rearWheelx,location.rearWheely];
my location class is :
#property (nonatomic, assign) double latitude;
#property (nonatomic, assign) double longitude;
#property (nonatomic, retain) NSDate * date;
#property (nonatomic, retain) NSString * locationDescription;
#property (nonatomic, retain) NSString * photoPath;
//#property (nonatomic, retain) NSString * category;
#property (nonatomic, retain) CLPlacemark * placemark;
#property (nonatomic, assign) NSInteger wheelId;
#property (nonatomic, assign) double frontWheelx;
#property (nonatomic, assign) double frontWheely;
#property (nonatomic, assign) double rearWheelx;
#property (nonatomic, assign) double rearWheely;
#property (nonatomic, assign) double wheelSize;
when I run the program, it crashed !! Help me !!

Answer 1

If i've not mistaken, your crash message would be something like "EXC_BAD_EXCESS" right?
Try this :
BOOL succeed = [lunGaiDataBase executeUpdate:#"insert into location (wheelId) values(?)",
[NSNumber numberWithInt:location.wheelId]];
Since wheelId is declared as NSInteger, you've got to pass it as
[NSNumber numberWithInt:location.wheelId]