Function to check for specific value in a range of cells and output 'TRUE' in a helper column - excel

Question

I'm trying to check a range of cells for the value "X" and when the column name where the "X" was found is among an array I have previously specified, I want to have a helper column that would say TRUE otherwise say FALSE.
To illustrate, here's a sample table:
In my sample, I have this array that contains 3 values ( Math, English and History). If there is an X in any of the rows whose header name is in the array, I want the helper column to say TRUE otherwise FALSE. It doesn't have to be all of the values in the array, it can be at least only one.
Here is my code (my original file has more columns than my sample, so my code is liek this)
Sub add_helper()
' Adding helper column
Dim checking As Variant
checking = check_issue() -- this is another function, basically checking will contain the values I want to check in this case Math, English and History, i have confirmed this gets it successfully
Dim wks As Worksheet
Set wks = ActiveSheet
Dim rowRange As Range
Dim colRange As Range
Dim LastCol As Long
Dim LastRow As Long
LastRow = wks.Cells(wks.Rows.Count, "I").End(xlUp).row
Set rowRange = wks.Range("I2:AD" & LastRow)
Set colRange = wks.Range("I1:AD1")
'Loop through each row
For Each rrow In rowRange
Do
For Each cell In colRange
'Do something to each cell
If InStr(checking, cell.value) > 0 Then
If Cells(rrow.row, rrow.Column).value <> "" Then
wks.Range("AI" & rrow.row).value = "TRUE"
Exit For
Else
wks.Range("AI" & rrow.row).value = "FALSE"
End If
End If
Next cell
Loop Until wks.Range("AI" & rrow.row).value <> "TRUE"
Next rrow
End Sub
My code results to just having an input of true whenever there is an X without actually checking if the header column is in my array.

Answer 1

Did you try normal formulas in Excel? You could create a table (a ListObject) with the courses as your array values and the combine SUMPRODUCT with COUNTIF to output True/False in your helper column. Easy to update and adapt:
Notice the table at most right named T_COURSES. The formula in helper column is:
=SUMPRODUCT(--(COUNTIF(T_COURSES,$B$1:$E$1)>0)*--(B2:E2="x"))>0
It works perfectly and it autoupdates changing values:

Answer 2

Match Headers of Matches Against Values in Array
Option Explicit
Sub AddHelper()
Dim checking As Variant: checking = check_issue()
Dim ws As Worksheet: Set ws = ActiveSheet ' improve!
Dim hrg As Range: Set hrg = ws.Range("I1:AD1") ' Header Range
Dim drg As Range ' Data Range
Set drg = ws.Range("I2:AD" & ws.Cells(ws.Rows.Count, "I").End(xlUp).Row)
Dim crg As Range: Set crg = drg.EntireRow.Columns("AI") ' (Helper) Column Range
crg.Value = False
Dim rrg As Range, rCell As Range, r As Long, c As Long, IsFound As Boolean
For Each rrg In drg.Rows
r = r + 1 ' for the (helper) column range
c = 0 ' for the header range
For Each rCell In rrg.Cells
c = c + 1
If StrComp(CStr(rCell.Value), "x", vbTextCompare) = 0 Then
If IsNumeric(Application.Match(CStr(hrg.Cells(c)), checking, 0)) _
Then IsFound = True: Exit For
End If
Next rCell
If IsFound Then crg.Cells(r).Value = True: IsFound = False
Next rrg
End Sub