AlessandroAvolio

IsNumber asks whether the content of the variable is meant to represent a numeric quantity. A string is not meant to represent a number but a series of characters.
IsNumber(variable) ... -> "variable" can be a number, array, string, pointer, boolean.

https://www.autoitscript.com/autoit3/docs/intro/lang_datatypes.htm
 

Open Scite, type the function name, set the cursor on the word, press F1, you get definition and examples. 
An example of a program that might work  
#include <AutoItConstants.au3> Main() Func Main() Local Const $aScreenArea[4] = [39, 355, 123, 429] ; Get coords with AutoIt v3 Window Info tool, Mouse tab Local $iCheckSumZero Local $iCheckSumNotZero Local $iCheckSum MsgBox(64, "Collecting graphic info", "Ensure number zero is on screen, inside $aScreenArea portion before continue") $iCheckSumZero = PixelChecksum($aScreenArea[0], $aScreenArea[1], $aScreenArea[2], $aScreenArea[3]) While 1 $iCheckSum = PixelChecksum($aScreenArea[0], $aScreenArea[1], $aScreenArea[2], $aScreenArea[3]) While $iCheckSum == $iCheckSumZero Sleep(400) $iCheckSum = PixelChecksum($aScreenArea[0], $aScreenArea[1], $aScreenArea[2], $aScreenArea[3]) WEnd $iCheckSumNotZero = $iCheckSum SoundPlay(@WindowsDir & "\media\tada.wav", $SOUND_NOWAIT) $iCheckSum = PixelChecksum($aScreenArea[0], $aScreenArea[1], $aScreenArea[2], $aScreenArea[3]) While $iCheckSum == $iCheckSumNotZero Sleep(400) $iCheckSum = PixelChecksum($aScreenArea[0], $aScreenArea[1], $aScreenArea[2], $aScreenArea[3]) WEnd WEnd EndFunc  

You need basic concept of "accessing data in array": https://www.autoitscript.com/wiki/Arrays#Accessing_Data_in_Arrays
Local $aArray[3] = [1, 2, 3] For $i = 0 to Ubound($aArray) -1 msgbox(0, "", $aArray[$i]) Next  

You have received replies on the topic specified in the title of the discussion. For new questions please mark the solution in this thread and open a new thread.  

https://www.autoitscript.com/autoit3/docs/functions/MouseWheel.htm
MouseWheel

#include <IE.au3> Main() Func Main() Local Const $sSELECT_NAME = "choice" Local Const $sPARTIAL_STRING = "third" Local $oIE, $oSelect $oIE = _IECreate("https://yari-demos.prod.mdn.mozit.cloud/en-US/docs/Web/HTML/Element/select/_sample_.Basic_select.html") $oSelect = _IEGetObjByName($oIE, $sSELECT_NAME) For $oOption In $oSelect.options If StringInStr($oOption.text, $sPARTIAL_STRING) > 0 Then Return _IEFormElementOptionSelect($oSelect, $oOption.text, 1, "byText") EndIf Next Return 0 EndFunc You need to get a list of all options of select and use Stringinstr with each of them. Use $oSelect.Option and then $oSelectOption.text like in the example upside. You also need to use a For...in..next loop in order to enumerate elements in an object collection.
https://www.autoitscript.com/autoit3/docs/keywords/ForInNext.htm

Hello, this could help you.
#include <GuiConstants.au3> #include <WinAPISysWin.au3> #include <GuiMenu.au3> Main() Func Main() Local $hWnd, $iStyle, $hMenu, $aWinPos Run("notepad") $hWnd = WinWait("[Class:Notepad]", "") Sleep(50) ;~ Retrieves the handle of the menu assigned to the given window $hMenu = _GUICtrlMenu_GetMenu($hWnd) ;~ Deletes menu items from the specified menu For $i = _GUICtrlMenu_GetItemCount ($hMenu) - 1 To 0 Step -1 _GUICtrlMenu_RemoveMenu($hMenu, $i) Next ;~ Retrieves style about the specified window $iStyle = _WinAPI_GetWindowLong($hWnd, $GWL_STYLE) ;~ Remove title bar $iStyle = BitXOR($iStyle, $WS_POPUPWINDOW) _WinAPI_SetWindowLong($hWnd, $GWL_STYLE, $iStyle) ;~ Refresh window style $aWinPos = WinGetPos($hWnd) WinMove($hWnd, "", $aWinPos[0], $aWinPos[1], $aWinPos[2] + 1) Return 0 EndFunc  

I am happy. Unfortunately I don't know the application, can't you try the same way? And if you copy and paste the text, does it work? You could try with Clipput and then with Send ("^ v"). I can't tell you anything else