Variables defined in batfile are displayed as blank when batfile is run using java processbuilder

I have a batfile to run a tomcat instance on a remote server. The batfile contains a variable for Session ID , and looks as below.

cmdkey.exe /add:Server /user:Server\Username /pass:Password
FOR /F "tokens=3 delims= " %%I IN ('psexec -nobanner \\Server query session ^| findstr "Username"') DO set ID=%%I
echo %ID%
PsExec.exe -accepteula -s -i %ID% \\Server -w "C:\Users\Username\Desktop\CMDTest" cmd /c "start /i "CMDTest" RunCatalina.bat"
cmdkey.exe /delete:Server

The batfile executes as expected when run independently. However, when I run it using the java processbuilder, the Variable ID is passed as blank.

ProcessBuilder Code:

    public static void runBatFileOutput(String batName,String Path) throws Throwable {
        ProcessBuilder pb = new ProcessBuilder("cmd", "/c", batName);
        File dir = new File(Path);
        pb.directory(dir);
        Process p = pb.start();
        InputStream is = p.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));

        String line = null;
        while ((line = reader.readLine()) != null) {
           System.out.println(line);
        }
    }