Excel VBA macro reading one column with differing text - excel

Question

I was tasked with creating a code that will check to see if internal hyperlinks in an excel spreadsheet worked. This code first changes the formulas that were on the spreadsheet and makes them actual hyperlinks (they were originally formulas linking the locations together). The problem that I have now is that I want to create hyperlinks ONLY if Column S has text. If it doesn't, I don't want the "E-COPY" text to be displayed. All of the text in Column S varies (not one line has the same characters), which is why I'm drawing a blank is to how I tell the program to only continue if it has any text, not anything specific. I am working with Excel 2016.
Also, I am doing this to 71935 and counting rows; is there a limit to how many it can go through? If so, what can I do about it?
Thank you!
Sub CreateHyperlinks()
Dim FN As Variant
Dim Path As Variant
Dim count As Variant
Sheets(1).Activate
count = WorksheetFunction.CountA(Sheets(1).Range("A:A"))
For i = 2 To count
If Range("AM" & i).Value = "Yes" And Columns("S") = Then
Range("E" & i).Value = ""
Path = Sheets(1).Range("R" & i).Value
FN = Sheets(1).Range("S" & i).Value
Sheets(1).Range("E" & i).Select
Selection.ClearFormats
Selection.Hyperlinks.Add Anchor:=Selection, Address:=Path & FN, TextToDisplay:="E-COPY"
Range("AM" & i).Value = " "
End If
Next i
End Sub

Answer 1

If you just need to check for any content in ColS then:
If Range("AM" & i).Value = "Yes" And Len(Range("S" & i).Value) > 0 Then

Answer 2

Few things:
'make a reference to the sheet you're working with
Dim ws As Worksheet
Dim wb As Workbook
Set wb = Excel.Application.ThisWorkbook
Set ws = wb.Worksheets(1)
'gets the absolute last row with data in it // ignores empty cells
count = ws.UsedRange.Rows.Count
personally, i hate working with named ranges, so i would suggest setting range references like so
what you wrote
Path = Sheets(1).Range("R" & i).Value
what i believe it should look like
Path = ws.Cells(i, 18).Value
if you want to test the type when working with variants, try this:
'tests the type associated with the variant. an 8 = string
If VarType(ws.Cells(i, 19).Value) = 8 Then
'do your thing
'tests if the value is null
ElseIf VarType(ws.Cells(i, 19).Value) = 0 Then
'do your other thing
here's a list of the vartype enumeration to help you out.
hope it helps!