!fileName! (String variable) was unexpected at this time in batch?

Question

I'm running a batch file that:
1. Go thru ALL *.properties files in C:\ExecutionSDKTest_10.2.2
2. Run them
3. compare line by line of the outputted log with ref log
But the cmd.exe keeps throwing me this error: "!fileName! was unexpected at this time. Any ideas?

CALL ant clean build compile 
REM Run ENG-zzz.properties  --> output to ENG-zzz.properties.log in Logs dir
REM loop thru/Run ALL .properties file names from "ExecutionSDKTest_10.2.2" folder
FOR %%G in (C:\ExecutionSDKTest_10.2.2\*.properties) DO (
set flag=true
Set fileName=%%~nxG
set testNum=!fileName:~0,7!
echo Running:!fileName!
java -jar Test.jar !fileName! > Logs\!fileName!.log

ECHO Create: Ref!fileName!.log at C:\ExecutionSDKTest_10.2.2\Logs
set logPath=C:\ExecutionSDKTest_10.2.2\Logs\!fileName!.log
set refLogPath=C:\ExecutionSDKTest_10.2.2\Logs\!testNum!-Ref.properties.txt
set lnCorrect=true
set errorLnCount=0
REM if ...Ref.txt doesnt Exist --> check certain lines of the log

REM assume ref.txt exists
<!logPath! (
    For /F "tokens=*" %%R in (!refLogPath!) DO (
        set logLine=
            set /p logLine=
        set refLogLine=%%R

        REM Check line by line of log against refLog
        REM assume ALL times have been replaced with: "xx:xx:xx"

        REM if corresponding lines mismatch
        if NOT !logLine!==!refLogLine! Do (
            set lnCorrect=false
            REM output to command line: can be put into .log/.txt later
            if errorLnCount==1 AND lnCorrect==false DO (
          ECHO The following line(s)  !fileName! are incorrect against corresponding line(s) in !testNum!-Ref.properties.txt 
             )
             ECHO !logLine!
        )
        )
    )

if lnCorrect=true Do Echo !fileName! Passed
  )
Pause

Answer 1

Your syntax is a bit odd (it's simply wrong)
if lnCorrect=true Do Echo !fileName! Passed

1. The IF statement must not have a DO clause.
2. compare needs two equal signs.
3. There are not logic operators like AND, OR
4. The variables must be expanded to be able to compare them

So your line should look like
if "!lnCorrect!"=="true" Echo !fileName! Passed

And the other bug is in the line

if errorLnCount==1 AND lnCorrect==false DO (

This could be refactored to

if !errorLnCount!==1 if !lnCorrect!==false (

There is also a problem with the line

ECHO The following line(s)  !fileName! are incorrect against

The closing parenthesis will cause your problem, as it closes the if-clause and loop.
Remove them or escape them

ECHO The following line(s^)  !fileName! are ... corresponding line(s^) in ...