After a while looking online for an applescript able to transfer data between Bluetooth devices in a comfortable way, i realized that nobody was able to code something useful. The solution could be very simple :
tell application "Finder" to set the_item to item 1 of (get selection) as text
do shell script "open -a 'Bluetooth File Exchange' " & (quoted form of posix path of the_item)
…but the script evolved almost alone to my joy. You can save the following script as droplet applescript App, add a nice icon (just google for “Bluetooth icon”), i hope u find it useful. There are contributions of Macscripter and Stack overflow. Feel free to share improvements for all of us! Would be nice to read these here 
#Bluetooth austausch
#Bluetooth File Exchange
#0,005
#Erstellt von Joy am 10.08.17, ->12.08.17
#=====================================
#HILFE:
#
#
#ZUTUN:
# -
# -
# -
#=====================================
--APPLESCRIPT
--bluetooth_powerstate(0) -- off
--bluetooth_powerstate(1) -- on
--bluetooth_powerstate(-1) -- toggle
--bluetooth_powerstate(9) -- query
property blueth_on : 0
property Osx : 4245
property _versionInteger : ""
use AppleScript version "2.4" -- Yosemite (10.10) or later
use framework "Foundation"
use framework "IOBluetooth"
use scripting additions
on run
my activate_bluetooth()
end run
on open transfer_files
if blueth_on is 0 then my activate_bluetooth()
my main(transfer_files)
end open
on reopen
set ls to {"kill hanging OBEXAgent", "Send file", "quit"} #{"Übertragung blockiert", "Datei senden", "Beenden"}
activate
set ch to choose from list ls with prompt "Choose option" #"Wähle Option..."
if ch is false then return
set ch to ch as text
if ch is "kill hanging OBEXAgent" then #"Übertragung blockiert" then
do shell script "killall OBEXAgent"
else if ch is "Send file" then
my main({})
else
quit me
end if
end reopen
on quit
set blueth_on to 0
#turn bluetooth OFF
set res to my bluetooth_powerstate("0")
continue quit
end quit
on activate_bluetooth()
if blueth_on is 0 then
#turn bluetooth ON
set res to my bluetooth_powerstate("")
if res is 0 then set res to my bluetooth_powerstate(1)
set blueth_on to 1
end if
end activate_bluetooth
on main(sel)
set blue_device to {}
set _versionInteger to system attribute "sysv"
if _versionInteger > Osx then
#"Bluetooth File Exchange"'s applescript dict is broken
set blue_device to my get_devices()
set lg to number of items in blue_device
if lg > 1 then
activate
set ch to choose from list blue_device with prompt "Choose device" #"Wähle Gerät..."
if ch is false then return
set blue_device to ch as text
else
beep
return
end if
end if
if sel is {} then
tell application "Finder"
set frwin to (target of window 1 as text)
activate
set ch to choose file default location alias frwin with multiple selections allowed
set sel to the result
if (sel as text) is false then return
end tell
end if
#send file
my send_files(sel, blue_device)
end main
on get_devices()
set allNames to ((current application's IOBluetoothDevice's recentDevices:0)'s valueForKey:"nameOrAddress") as list
set pairedNames to ((current application's IOBluetoothDevice's pairedDevices())'s valueForKey:"nameOrAddress") as list
return pairedNames
end get_devices
on send_files(sel, blue_device)
set nw to ""
repeat with a in sel
set a to a as text
set nw to nw & quoted form of POSIX path of a & " "
delay 0.2
end repeat
#use shell-applescript dict is broken
if _versionInteger > Osx then
tell application "Bluetooth File Exchange"
try
send file my_file to device blue_device
on error #decline
return
end try
end tell
else
do shell script "open -a 'Bluetooth File Exchange' " & (nw as text)
end if
end send_files
on bluetooth_powerstate(m)
(*
integer m : operation mode
0 = off
1 = on
-1 = toggle
9 = query (print current state)
return integer : resulting state
*)
#if m = 9 then set m to ""
do shell script "/usr/bin/python <<'EOF' - " & m & "
# coding: utf-8
#
# file:
# bluetooth_powerstate.py
#
# function:
# get or set bluetooth power state
#
# usaeg:
# ./bluetooth_powerstate [mode]
# mode :
# 0 = off
# 1 = on
# -1 = toggle
# = query (print current state)
# version:
# 0.10
#
import sys, objc
import time
from CoreFoundation import *
IOBT_BRIDGESUPPORT = '''<?xml version=\"1.0\" standalone=\"yes\"?>
<!DOCTYPE signatures SYSTEM \"file://localhost/System/Library/DTDs/BridgeSupport.dtd\">
<signatures version=\"0.9\">
<function name=\"IOBluetoothPreferenceGetControllerPowerState\">
<retval type=\"i\"></retval>
</function>
<function name=\"IOBluetoothPreferenceSetControllerPowerState\">
<arg type=\"i\"></arg>
<retval type=\"i\"></retval>
</function>
</signatures>'''
objc.initFrameworkWrapper(
frameworkName=\"IOBluetooth\",
frameworkIdentifier=\"com.apple.Bluetooth\",
frameworkPath=objc.pathForFramework('/System/Library/Frameworks/IOBluetooth.framework'),
globals=globals()
)
objc.parseBridgeSupport(
IOBT_BRIDGESUPPORT,
globals(),
objc.pathForFramework('/System/Library/Frameworks/IOBluetooth.framework')
)
def set_ioblpstate(s):
# int s : 0 = off, 1 = on
IOBluetoothPreferenceSetControllerPowerState(s)
s1 = -1
for i in range(50):
s1 = get_ioblpstate()
if s1 == s:
break
time.sleep(0.1)
if s1 != s:
sys.stderr.write('Unable to set bluetooth power state to %s\\n' % ('off' if s == 0 else 'on').encode('utf-8'))
sys.exit(1)
return s1
def get_ioblpstate():
return IOBluetoothPreferenceGetControllerPowerState()
def main():
m = [ a.decode('utf-8') for a in sys.argv[1:] ]
if m == []:
print '%d' % get_ioblpstate()
elif m == ['0']:
print '%d' % set_ioblpstate(0)
elif m == ['1']:
print '%d' % set_ioblpstate(1)
elif m == ['-1']:
print '%d' % set_ioblpstate(1 if get_ioblpstate() == 0 else 0)
else:
sys.stderr.write('Usage: %s [mode]\\n\\t%s, %s, %s, %s\\n' % (
sys.argv[0], 'mode: 0 = off', '1 = on', '-1 = toggle', '(void) = query')
)
sys.exit(1)
sys.exit(0)
main()
EOF"
result + 0
end bluetooth_powerstate