Implicitly reference variable name through string array for if statement?

What I am attempting to do is use an if statement to compare a specified value to a long list of variables. I want to implicitly reference the variable names for the if statement (as well as further processing) so that I don't have to make 20+ if statements. This is my code, and I get a type mismatch.

Public iFPYCol As Long
Public iTimeCol As Long
Public iBrgPosCol As Long
Public iBrgPosFailCol As Long
Public iDisLoadCol As Long
Public iDisLoadFailCol As Long
Public iMaxBrgLoadCol As Long
Public iBrgMaxLoadFailCol As Long
Public iBrgTravelCol As Long
Public iTravelFailCol As Long
Public iPlateLoadCol As Long
Public iPlateLoadFailCol As Long
Public iDepartureCol As Long
Public iDepartureFailCol As Long
Public iPlaneCol As Long
Public iPlaneFailCol As Long
Public iCamIndexFailCol As Long
Public iCycInterruptCol As Long
Public iCamAssistCol As Long
Public iCamAssistFailCol As Long
Public iCoverNoCol As Long

Sub Main()

'unrelated code

sNothing = IncrementColNum(iBrgPosFailCol, 2)

'unrelated code
End Sub

Function IncrementColNum(iCol As Long, iNum As Long) As String

Dim arrVariables() As String
arrVariables = Split("iFPYCol,iBrgPosCol,iBrgPosFailCol,iDisLoadCol,iDisLoadFailCol,iMaxBrgLoadCol,iBrgMaxLoadFailCol,iBrgTravelCol,iTravelFailCol,iPlateLoadCol,iPlateLoadFailCol,iDepartureCol,iDepartureFailCol,iPlaneCol,iPlaneFailCol,iCamIndexFailCol,iCycInterruptCol,iCamAssistCol,iCamAssistFailCol,iCoverNoCol,iTimeCol", ",")

For iCounter = 1 To UBound(arrVariables)

    If arrVariables(iCounter) >= iCol Then
        arrVariables(iCounter) = arrVariables(iCounter) + iNum
    End If

Next iCounter

'Return Nothing
IncrementColNum = "Nothing"

End Function

The type mismatch is because my array and iCol are different types. The problem is that I don't want to compare arrVariables(iCounter) to iCol, I want to compare the value of the variable whose name is arrVariables(iCounter) to iCol.

I have it in a function because I am going to be doing this many times; I looked up how to have a function return nothing, and it doesn't look like it is possible with VBA.