How to access a specific worksheet in vba?

[Asdf0qwerty]

As of now, I've already enabled my add-in in the Add-In dialog box and started to test in a new Excel Workbook file if it would work. Sadly, my add-in still halts at the statement above resulting to a "#VALUE!" result into the Cell.

In my uploaded image, you can see that there's 2 VBA projects. The one above is my add-in. Now I tried to add-watch "Application.Workbooks". Yes it did see a workbook, but it was VBAProject (Book1), not the workbook of my add-in. So how will I be able to access the Workbook (particularly the unviewable worksheets) of my add-in? TIA.

Btw, the worksheets enclosed inside the red box are the ones I want to access.

 

[xld]

SImply

Workbooks("ADD-IN WHT CALCU V1.0.xlam").Worksheets("MONTHLY")

OR

ThisWorkbok.Worksheets("MONTHLY")

 

[pirdop]

just in addition to what has already been said

don't know what your code is like but you might need to 'Activate' the worksheet

in this case

Activate.Sheets("NAME")

depending on what you want to do it can work simply
Sheets("name") or
Sheets(index number)

for example in a new work book excel's default
sheets(1) will return sheet named Sheet1
which equivalent to
sheets("Sheet1")

 

[Peter_SSs]

Activate.Sheets("NAME")

What version of vba does that work in?

 

[xld]

What version of vba does that work in?

Version 17/Alpha!

 

[Asdf0qwerty]

@All : Thank you for everyones inputs! and GBY all

@xld: Thank you!!! :D This did the trick!! :D

@pirdop: Thanks for the additional info. To be honest I don't know if I still need to use it because xld's already worked for me to access values in worksheets that I needed. So, in what case/s in Excel VBA programming should I use "Activate.Sheets(<name>)" ? TIA :D