Change raw data size from 2 bytes to 4 bytes in iOS nrf Tool Box

[Abhijit Gite]

I am using nrf Toolbox iOS demo application. 
I have a requirement in which I want to change the incoming data stream to accept 4 bytes of data instead of the default 2 bytes. Please suggest necessary changes. This is for Heart Rate monitor

[Roshan Rajaratnam]

Hi what are you trying to achieve? can you elaborate a little bit more please?