Display Colon on 4-digit display

Development Boards Arduino
1

Having trouble turning on the colon on the 09765 4-digit display. Could someone post some basic code for using the special command character, 0x77?

2

Use .write() instead of .print().

mySerialPort.write(0x77); special character

mySerialPort.write(0x30); turn on colon and apostrophe