Error in MATLAB COM Automation

I'm new to COM automation using MATLAB and VB.NET so I made a simple program that adds two number and display the result in the textbox. The addition is done using MATLAB. Every time I run the program, the returned value in the textbox is this: * _ ??? Undefined function or variable 'a'. _ *

My MATLAB code is this:

function out = addMe(a,b)
out = a + b;
end

My VB code is this:

Imports Add

Public Class Form1
    Dim a As Integer
    Dim b As Integer
    Dim MATLAB As Object
    Dim result As String

      Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
          a = 5
          b = 10
          MATLAB = CreateObject("MATLAB.Application")

          result = MATLAB.Execute("cd C:\Users\Elvin Gentiles\Desktop\Program")
          result = MATLAB.Execute("out = addMe(a,b)")
          TextBox1.Text = result
      End Sub
End Class

I hope you can help me. Thanks

Answer 1

[Cel Kulasekaran]

You have not passed in your VBA variables a and b to the Matlab COM environment.