Why am I receiving Error 1004 when trying to specify the loop variable in a cell reference? - excel

Question

I am stuck, primarily because I am still brand spanking new at VBA. As such, I really appreciate any help you can lend me. I have looked through many other Error 1004 posts on here, but they were either for different issues, or it is quite possible that I am just too ignorant to know what to do with the advice in them.
My issue is this: I have two workbooks, one with raw data, and one in which the raw data is consolidated into relevant statistics. I am trying to sumif the data in X:X in my raw workbook (6620) by two criteria in the statistics book and then update the value in the corresponding cell in the statistics book.
I am running into a Run-time Error 1004: Application-defined or object-defined error at the indicated points. I am lost as to how to move past this.
Any help is greatly appreciated!
This is as far as I have gotten:
Option Explicit
Sub ImportFTEs()
Application.ScreenUpdating = False
Application.EnableEvents = False
Dim ws As Integer
Workbooks.Open Filename:=ActiveWorkbook.Path & "\6620\FY19*.xlsb"
For ws = 1 To Worksheets.Count
Sheets(ws).Name = "Sheet1"
Next ws
Dim i As Integer
Dim j As Integer
Dim k As Integer
Dim l As Integer
Dim totalFTE As Long
Dim lastRow As Integer
lastRow = Cells(Rows.Count, "D").End(xlUp).Row
Dim wb As Worksheet
Set wb = Workbooks.Open(ActiveWorkbook.Path & "\FY19*.xlsb").Sheets("Sheet1")
Dim wc As Worksheet
Set wc = ThisWorkbook.Sheets("B")
Dim sum1R As Range
Set sum1R = wb.Range("X:X")
Dim arg2R As Range
Set arg2R = wb.Range("D:D")
Dim arg2C As Range
Set arg2C = wc.Cells(7, i)
>>> Error 1004
Dim arg3R As Range
Set arg3R = wb.Range("S:S")
Dim arg3C As Range
Set arg3C = wc.Cells(j, 6)
>>> Error 1004
For k = 8 To 18
For l = 7 To 18
For i = 7 To 18
For j = 8 To 18
wc.Cells(k, l).value = Application.WorksheetFunction.SumIfs(sum1R, arg2R, arg2C, arg3R, arg3C)
Next j
Next i
Next l
Next k
ActiveWorkbook.Close savechanges:=True
Application.ScreenUpdating = True
Application.EnableEvents = True
End Sub

Answer 1

Should be something like this - you need the Set lines containing i and j inside their respective loops - that way the values actually increment (and aren't 0 when they're initialized):
Option Explicit
Sub ImportFTEs()
Application.ScreenUpdating = False
Application.EnableEvents = False
Workbooks.Open Filename:=ActiveWorkbook.Path & "\6620\FY19*.xlsb"
Dim i As Long, j As Long, k As Long, l As Long
Dim totalFTE As Long
Dim wb As Worksheet
Set wb = Workbooks.Open(ActiveWorkbook.Path & "\FY19*.xlsb").Sheets("Sheet1")
Dim wc As Worksheet
Set wc = ThisWorkbook.Sheets("B")
Dim sum1R As Range
Set sum1R = wb.Range("X:X")
Dim arg2R As Range
Set arg2R = wb.Range("D:D")
Dim arg3R As Range
Set arg3R = wb.Range("S:S")
Dim arg2C As Range
Dim arg3C As Range
For k = 8 To 18
For l = 7 To 18
For i = 7 To 18
Set arg2C = wc.Cells(7, i)
For j = 8 To 18
Set arg3C = wc.Cells(j, 6)
wc.Cells(k, l).Value = Application.WorksheetFunction.SumIfs(sum1R, arg2R, arg2C, arg3R, arg3C)
Next j
Next i
Next l
Next k
ActiveWorkbook.Close True
Application.ScreenUpdating = True
Application.EnableEvents = True
End Sub