Empty Excel cell fail IF statement

[AlchemistZim]

Opt("ExpandEnvStrings", 1) ;0=don't expand, 1=do expand
Opt("ExpandVarStrings", 1) ;0=don't expand, 1=do expand
Opt("TrayIconHide", 1) ;0=show, 1=hide tray icon
Opt("WinTitleMatchMode", 2) ;1=start, 2=subStr, 3=exact, 4=advanced, -1 to -4=Nocase

#include <Excel.au3>
#include <File.au3>
#include <Inet.au3>

Global $oExcel = _Excel_Open(True, False, True, True, True)
Global $sSpreadsheet = "C:\Users\MiBrown\Desktop\Win10 Upgrade\Sorted.xlsx" 
Global $oWorkbook = _Excel_BookOpen($oExcel, $sSpreadsheet)

For $i = 2 To 10
    $sCellA = "A" & $i
    $sCellB = "B" & $i
    $sCellC = "C" & $i
    $sCellD = "D" & $i
    $sCellE = "E" & $i

    $sPCName = _Excel_RangeRead($oWorkbook, DEFAULT, $sCellB)   
    $sIP = _Excel_RangeRead($oWorkbook, DEFAULT, $sCellC)

    If $sPCName = "" Then CleanExit()
    If $sIP = "" Then ContinueLoop
    
    If FileExists("\\$sPCName$\c$\Tools") Then _Excel_RangeWrite($oWorkbook, DEFAULT, "YES", $sCellD)
    If FileExists("\\$sPCName$\c$\Program Files (x86)\GTPC\tray.exe") Then _Excel_RangeWrite($oWorkbook, DEFAULT, "YES", $sCellE)
Next

Func CleanExit()
_Excel_Close($oExcel, True, False)      
Exit
EndFunc

So I have a list of PCs (Column-B) that I run a ping test on, from the ping test, I copy the IPs to Column-C

If the $sPCName is empty the script saves and closes

If the $sIP address is empty the script is supposed to ContinueLoop to the next entry...ITS NOT DOING THIS

Its still trying to look for files on the computer even thought the ping test fails

I've tried IsKeyword, IsDeclared, comparing the cell directly

The only way that ive gotten this to work is by setting all of the blank cells to a single unique string ("NoIP"), and look for that

Can anyone tell me what I'm doing wrong?

[Danp2]

You're probably getting a Null value instead of an empty string. Try changing the line to

If String($sIP) = "" Then ContinueLoop