So long story short, I'm using an excel (passed down from someone else) to collect testing data from something hooked up to an arduino. But when I run it on my laptop, I get a "VBA Project 438 object doesn't support this property or method" error.
Here's the code, which has the error on line "Public mySerial As...."



Code:
Option Explicit

Private nTimer As Date
Private outputCount As Integer

Public mySerial As ArduinoExcel.ArduinoExcel
Public product As String
Public version As String



'Arduino Excel launch
'activated pressing [CTRL][a]
Sub CommanderRun()

    product = "ArduinoExcel"
    version = "2.1"
    
    'the program control jumps to the form
    'error 438 here should mean "unregistred dll"
    FormConnect.Show

End Sub


Public Sub RunInterrupt()

Dim str As String
Dim ret As Integer

    nTimer = DateAdd("s", 1, Now())
    Application.OnTime nTimer, "RunInterrupt"

    'add code here
  
End Sub


Public Sub StopInterrupt()
    
    Application.OnTime nTimer, "RunInterrupt", , False

End Sub
I have no idea what to change ArduinoExcel.ArduinoExcel to for this to work. I've only learned code in C++ and MATLab =/
I appreciate any help!