Sending arrays from Excel into Labview

Question

I want to send an array from Excel VBA into a LabView VI.
The Excel example shows how to send individual numbers and return an array into Excel but not send an array.
Everything tried sends blank arrays into LabView, which can then be modified in LabView and returned to Excel.
A VBA code snippit that does not work is:
Sub LoadData()
' LoadData Macro
' Keyboard Shortcut: Ctrl+l
' This is an example to demonstrate LabVIEW's Active-X server capabilities.
' Executing this macro loads a LabVIEW supplied example VI "Frequency Response.vi",
' runs it and plots the result on an Excel Chart.
Dim lvapp As LabVIEW.Application
Dim vi As LabVIEW.VirtualInstrument
Dim paramNames(0)
Dim paramVals As Variant
Set lvapp = CreateObject("LabVIEW.Application")
viPath = lvapp.ApplicationDirectory + "\examples\apps\freqresp.llb\DAK Frequency Response.vi"
Set vi = lvapp.GetVIReference(viPath)   'Load the vi into memory
vi.FPWinOpen = True                     'Open front panel
paramNames(0) = "Foo"
paramVals = Sheet1.Range("j1:j1000").Value
Call vi.Call(paramNames, paramVals)
This code generates an error - expecting 1D array or variants.
However, if I supply the correct array, then LabView thinks it is empty
'foo' is a cluster
'Array' is a double array
Neither work to receive the data

Answer 1

Thanks for the reply but that approach will be difficult.  The problem to solve is relatively simple IF LabView could read arrays (it writes arrays easily).  Here is the problem:
I want to convolute two large arrays.  I have written VBA programs to do this but they take too long - over 30 sec whereas the LabView version take <1 sec IF I could get the data into LabView.
The convolute is part of an optimization program that goes though many loops so that it takes hours to run efficiently AND if I manually change cells in the spreadsheet, then it takes 30sec to come back as VBA does not respect clean cells (for some reason).
I was trying to write a function in VBA to do this calculation via LabView rather than VBA.  One way to  do this is to write a text file in VBA and read in LabView, then pass the results back or maybe the clipboard as a buffer.  That is faster but clumsy.  You could also have LabView look for dirty cells and then do the calculation as the server rather than the client.  Again, time consuming and cumbersome.  I have written pure LabView code to do the curve fitting but prefer to use Excel as that is easier to incorporate and work with the data.   You can do convolute using FFTs but Excel does not do that correctly - they CANNOT make their FFTs into a function (VBA functions cannot modify cells in the spreadsheet but only return variables.  FFT modifies cells so cannot be called from a function, only a macro, which then needs to be updated manually).  Again, I can kluge VBA (real kluge this time) to make FFTs work as a function BUT prefer the LabView solution, if possible, as I am not sure the FFT will actually save time.
I am not sure if the problem is LabView's fault or Excel's (2013) fault that the variables are not set-up properly.  LabView claims to be able to do this.  Again, you can pass single variables into LabView and read back arrays but try as I might, I cannot get arrays into LabView.
Any help in sending arrays (maybe Labview expects a variant variable and needs to convert it somehow) would be appreciated.  Variants are suppose to be able to be converted automatically but maybe there is a bug in LabView (2010) that does not handle input variant arrays correctly (I have tried making them clusters, double arrays, ect).  LabView thinks that all the arrays sent by VBA are empty. If LabView modifies the same array, VBA sees that modification so that the addresses appear to be sent correctly i.e. the array "handle" is being sent to LabView or else it could not fill the array to send back to VBA.
If ever this is solved, I will put on-line the solution for others as again marrying both programs will have advantages.  Others may find this interesting is marry LabView with Excel so that LabView does some of the heavy calculations that Excel has kluged.