I want some code to run whenever Sheet8 is activated, so am running the code
(which is "stored" in ThisWorkbook) on the sheet.activate event.

The code essentially is a counter function, going to Sheet3, getting values
for 3 counters, and then going back to Sheet8 to enter the value for the
counters. I get an run-time error '1004" at this place in the code:

ActiveWorkbook.Worksheets(8).Select
Range("B" & (47 + Y)).Select
ActiveCell.Value = counterH

I surmise I'm mis-identifying Sheet8, but this is exactly how I identified
Sheet3, when I went there. I cannot get the code to continue. Any
suggestions, guys?

TIA