How to send parameter like this 0x00,0xff for requestfrom iphone to BLE

[guatam]

Please suggests...

I want to send parameter like this ...

uint8_t val = 0x00,0xff;
        NSData *data = [NSData dataWithBytes:&val length:1];
        [proximityPeripheral writeValue:data forCharacteristic:self.immidiateAlertCharacteristic type:CBCharacteristicWriteWithoutResponse];

IN iOS.. BUT ITS GIVING WRONG..

[wlgrd]

What is it giving wrong?

[run_ar]

Please take a look at this example.