I2C volume control

From what I seen in the datasheet it's seems to be easy.
Are you connecting the I2C lines in the right pins?

Uno A4 (SDA), A5 (SCL)

byte val[10] = {0x01 .........};//all the elements you want to send
void setup()
{ 
 Wire.begin(); // join i2c bus
}

void loop()
{
  Wire.beginTransmission();                            
  Wire.write(val,11);             // fill data buffer to be transmited-> 11 bytes
  Wire.endTransmission();     // stop transmitting