You will not be able to change input addresses with the HMI. You will need to use bit addresses such as B3/0. If you try to use a address such as I:0/0, then HMI will write to it, but the scan of the PLC will quickly over write the value based on the state of the physical input.
Ron Beaufort explains this very will in his video series. If you search YouTube for PLC Training, you will find his videos.