Pass data to a subroutine in a MSChart's form.

I have a MSChart control on a form named frmDRchart. It is addressed by a subroutine in frmDRchart named ChartIt. It currently can successfully make graphs with data generated within ChartIt.

Now I want to generate the data in subroutine TTabK4 contained in a module outside frmDRchart but inside the same frmMDI1 project. The data is a matrix with column 1 being integers for the x axis and column 2 being double precision numbers.

I have tried this:
'Create matrices for 2 lines:
'Dim ChartPointsAc() As Variant 'Dimensioned elsewhere.
'Dim ChartPointsRe() As Variant
ReDim ChartPointsAc(1 To NFIXEDK, 1 To 2)
ReDim ChartPointsRe(1 To NFIXEDK, 1 To 2)

'Add data to matrices:
For I = 1 to nfixedk
If n <= nfixedk then
ChartPointsAc(n, 1) = n 'acceptaance line.
ChartPointsAc(n, 2) = UAC 'acceptaance line.
ChartPointsRe(n, 1) = n 'rejection line.
ChartPointsRe(n, 2) = URE 'rejection line.
End If
Next

'Send data to subroutine ChartIt in frmDRchart for plotting:
If n =< nfixedk then
Set f = New frmDRchart

'send matrix for first line:
'err------> Call f.ChartIt(ChartPointsAc(), 1) 'acceptaance line.

'send matrix for second line:
Call f.ChartIt(ChartPointsRe(), 2) 'rejection line.
End If
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'In frmDRchart.Chartit:
Private Sub ChartIt(ChartPoints As Variant, CurSeries as integer)
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Error 438 ... procedure doesn't support this property or method
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