Write not updating Characteristic Value

[Alex-ReachIndustries]

So a little bit of an odd one here... I've followed what I've seen everywhere else and as far as I can tell everything makes sense, however when I call Characteristic.Write([]byte) from within the golang server side the characteristic value is not being updated and when read by an external device the value has indeed not updated. No errors or panics are being triggered, additionally, the fmt.Print inside the WriteEvent for the serverCharacteristic is being triggered, and when an external device writes to the clientCharacteristic it does update. Any ideas? Have I missed something really obvious?

...
        var serverCharacteristic bluetooth.Characteristic
	var clientCharacteristic bluetooth.Characteristic
	must("add service", adapter.AddService(&bluetooth.Service{
		UUID: serviceUUID,
		Characteristics: []bluetooth.CharacteristicConfig{
			{
				Handle: &serverCharacteristic,
				UUID:   serverUUID,
				Value:  currentResp,
				Flags:  bluetooth.CharacteristicReadPermission | bluetooth.CharacteristicWritePermission | bluetooth.CharacteristicWriteWithoutResponsePermission | bluetooth.CharacteristicWritePermission,
				WriteEvent: func(client bluetooth.Connection, offset int, value []byte) {
					fmt.Print("value: ", string(value))
					currentResp = value
				},
			},
			{
				Handle: &clientCharacteristic,
				UUID:   clientUUID,
				Value:  currentClient,
				Flags:  bluetooth.CharacteristicReadPermission | bluetooth.CharacteristicWritePermission | bluetooth.CharacteristicWriteWithoutResponsePermission | bluetooth.CharacteristicWritePermission,
				WriteEvent: func(client bluetooth.Connection, offset int, value []byte) {
					fmt.Print("value: ", string(value))
					if string(currentServer) == "Input Command: " || string(currentServer) == "Authenticated! Input Command: " || string(currentServer) == "Failed! Input Command: " || string(currentServer) == "Reboot request received. Input Command: " || string(currentServer) == "Wifi established! Input Command: " {
						if string(value) == "exit" {
							panic("exit")
						}
						if string(value) == "reboot" {
							_, err = serverCharacteristic.Write([]byte("Reboot request received"))
							currentServer = []byte("Reboot request received. Input Command: ")
							if err != nil {
								panic("failed to write: " + err.Error())
							}
							_, err := exec.Command("/bin/sh", "-c", "sudo reboot now").Output()
							if err != nil {
								panic("failed to reboot: " + err.Error())
							}
						}
						if string(value) == "authenticate" {
							_, err = serverCharacteristic.Write([]byte("Authenticate: "))
							currentServer = []byte("Authenticate: ")
							if err != nil {
								panic("failed to write: " + err.Error())
							}
						}
...

[aykevl]

Is this on Linux?
It would help if you can make a small self-contained test case, so I can debug the issue myself.