Not able to find other devices with bluetooth opened !!!!

[joy-mollick]

I tried to exchange text between two devices connected each other by bluetooth , I thought this package can help me. But unfortunately I changed logic also to if (scannedDevice != null) {
emit([error, scannedDevice]);
}
I opened bluetooth on another phone ,and opened this application from another device , then I am not able to find that device , So why is this package not working ? Plz any help me to work this issue out .....