Referencing a sheet by its order or index number in a formula

[kidneythief]

Hi! I'm trying to insert a sheet reference within a countif formula based on the sheet's index number.
My sales sheet (sheet 3) contains a list of items sold in column G. A separate sheet is used per month so the current active sheet would be named APRIL 2021 with the newest, active sheet always being the third from the left.
My invoice sheet (sheet 2) contains a full product list. I'm trying to set up a column here that counts the number of instances of each product list entry that is found in the active sales sheet (always sheet 3).

I've added this module for returning the sheet names:

Function SHEETNAME(number As Long) As String
SHEETNAME = Sheets(number).Name
End Function

Apart from that, I'm having trouble putting together the COUNTIF function (with maybe INDIRECT??) without returning VALUE, NAME, or REF errors.

Any help would be greatly appreciated!

 

[RoryA]

It would be something like:

=COUNTIF(INDIRECT("'"&SHEETNAME(3)&"'!G:G"),A2)

where A2 contains the product name of interest.

 

[kidneythief]

It would be something like:

=COUNTIF(INDIRECT("'"&SHEETNAME(3)&"'!G:G"),A2)

where A2 contains the product name of interest.

Ah thank you, I had not been properly replacing the variable in the place of A2! Thanks for the help, Rory!

 

[kidneythief]

It would be something like:

=COUNTIF(INDIRECT("'"&SHEETNAME(3)&"'!G:G"),A2)

where A2 contains the product name of interest.

Ah, it turns out I had to add up values in a quantity column next to each instance of the product name (e.g. in the quantity column next to one instance of Product A it might say 20 packs, in another instance 30 packs, and I need the sum of those values, or 50)

I've come up with this, which seems to work, but looks quite clunky:

=SUMIF(INDIRECT("'"&SHEETNAME(3)&"'!G:G"),A2,(INDIRECT("'"&SHEETNAME(3)&"'!Z:Z")))

where G:G is the Product List Column, A2 is the item name, and Z:Z is the Quantity column.

Is there a better way to do this?

 

[RoryA]

Not really. Anything that uses INDIRECT is inherently clunky to be honest.

 

[kidneythief]

Not really. Anything that uses INDIRECT is inherently clunky to be honest.

Oh well, it's working for now so I'll just try not to look at it! ? Thanks again!