need help with this recoil script

hello everyone, i have been using this recoil script which is working great for me,but i want to upgrade it and i need help, i want to add 2 functions to the script and dont know how.
i would like the scroll lock button to turn on and off when i activate and deactivate the script, and i would like to add an ignore button for grenades use(caps lock would be great for that).

the script is for logitech software
this is the script im using:
^{----------------------------------------------------------------------------------

-------------------------------- control settings --------------------------------

----------------------------------------------------------------------------------

------------------ button 3 - activation/deactivation of SCRIPT ------------------

----------------------- button 4 - recoil minus - STEP 15% -----------------------

----------------------- button 5 - recoil plus - STEP 15% -----------------------

----------------------------------------------------------------------------------

local activated = 3 -- click wheel mouse

local minus = 7 -- click button 4 mice

local plus = 8 -- click button 5 mice

----------------------------------------------------------------------------------

------------------------------ sensitivity setting -------------------------------

------------- inversion - set the "minus" sign before the sensitivity ------------

----------------------------------------------------------------------------------

-------------- the sensitivity setting in the game 50 - change 45-55 -------------

------- the default vertical multiplier in the game is 0.7-change 0.7-1.3 --------

----------------------------------------------------------------------------------

local sensitivity_global = 50 -- sensitivity in the game (default is 50)

local sensitivity_vertical = 1.0 -- the multiplier is vertical (default is 1.0)

----------------------------------------------------------------------------------

------------------- power of the compensating vertical recoil --------------------

----------------------------------------------------------------------------------

-- SCOPE X1 AKM+0 BARYL+2 M416+0 SCAR.L/QBZ/AUG-1 DP48+0 GROZA+0 M265-1

-- SCOPE X2 AKM+5 BARYL+5 M416+4 SCAR.L/QBZ/AUG+3 DP48+3 GROZA+4 M265+2

-- SCOPE X3 AKM+6 BARYL+7 M416+6 SCAR.L/QBZ/AUG+5 DP48+5 GROZA+6 M265+4

-- SCOPE X4 AKM+8 BARYL+9 M416+8 SCAR.L/QBZ/AUG+7 DP48+7 GROZA+8 M265+6

-- SCOPE X4 VINTOREZ+4

-- BURST -- SCOPE X1 M16A4/MUTANT+0

-- BURST -- SCOPE X2 M16A4/MUTANT+5

-- BURST -- SCOPE X3 M16A4/MUTANT+6

-- BURST -- SCOPE X4 M16A4/MUTANT+8

-- SMG -- SCOPE X1 UMP-2 VECTOR-1 UZI-2 TOMPSON-1 P18C-1 Skorpion-3

-- SMG -- SCOPE X2 UMP+2 VECTOR+3

----------------------------------------------------------------------------------

---------------------------------- never no fix ----------------------------------

----------------------------------------------------------------------------------

EnablePrimaryMouseButtonEvents (true)

function OnEvent(event, arg)

-- OutputLogMessage("%s - %d\n", event, arg)

if (event == "PROFILE_ACTIVATED") then

EnablePrimaryMouseButtonEvents(true)

end

if (event == "MOUSE_BUTTON_PRESSED" and arg == activated) then

recoil = not recoil

if (recoil == false) then

OutputLogMessage("OFF-Recoil\n")

OutputLCDMessage("OFF-Recoil")

else

OutputLogMessage("ON-NoRecoil\n")

OutputLCDMessage("ON-NoRecoil")

end

step_recoil = 5 * 50 / sensitivity_global / sensitivity_vertical

end

if (event == "MOUSE_BUTTON_PRESSED" and arg == plus) then

step_recoil = step_recoil * 1.18

OutputLogMessage("Plus\n")

OutputLCDMessage("Plus")

end

if (event == "MOUSE_BUTTON_PRESSED" and arg == minus) then

if step_recoil > 1 then

step_recoil = step_recoil / 1.18

OutputLogMessage("Minus\n")

OutputLCDMessage("Minus")

end

end

if (event == "MOUSE_BUTTON_PRESSED" and arg == 1 and recoil) then

repeat

Sleep(19)

MoveMouseRelative(0, step_recoil)

until not IsMouseButtonPressed(1)

end

end}

i know it's linear and not perfect recoil control, but works great for the first 5 bullets, and the rest is pretty easy to compensate

need help with this recoil script