Import or Add code to an add-in dynamically - vba

Question

I am working on a project where I have created a PowerPoint addin. The concept is this will only contain an user form, with a list box. Based on the user selection other modules (bas files) will be added or imported to the presentation and the code will be executed.
I don't want to include all the modules in the add in as depending upon the requirement I can do the modification and then can store in a shared folder. So every time user uses the addin they can have the updated version. So I don't have to re circulate the addin with every change.
I have a blank module where i import the code from a text file (code from bas file saved as text) and it runs.
I can import the bas files, also using inserFrom file option I can import code from a text file, but problem is it's always getting added to the current presentation code window. But I want to add the code to the addin code pane.
I have a blank module in the addin called "tempCode", where I want to update the imported code, but I am not able to do so.
It works fine when I am editing the addin as a ppt, but when I convert ppt to an addin the concept is not working.
Any ideas how I can add the code to the addin code pane rather adding to the active ppt.
Code details:
I have a user form, with a list box.
It has 3 items.
Option 1
Option 2
Option 3
If user selects any option, let's say option 2, the code for option 2 will be imported from a text file to the working module.
And a command button to run the selected.
Name of working module is “Mod_Working”
Name of text file is “C:\Code\Option2.txt”
Below is the code I am using:
Sub ImportSelected()
With ActivePresentation.VBProject.VBComponents(“Mod_Working”).CodeModule
.DeleteLines 1, .CountOfLines 'it deletes any existing code
.AddFromFile “C:\Code\Option2.txt”
End With
End Sub
Code in text file:
Sub Test
Msgbox “You selected Opt 2”
End sub
Code of Command Button:
Private Sub Cmd_run_Click()
Application.Run “Mod_Working.Test”
End Sub
This works in ppt mode but not when converted to addin.

Answer 1

Why not do this:
- In the shared folder, mark the add-in file as read-only (right-click, properties). This prevents the file being in-use when people are using the add-in (at least it works that way in Excel)
- When you have an update, simply replace the add-in and set it to read-only again.
Alternatively, check out: www.jkp-ads.com/articles/updateanaddin.asp