Liquibase: I'm having an error fixing the installation of Liquibase on oracle

here is the error saying liquibase is not recognized as an internal/external

command 


http://animobile.info/upload/1/error.bmp


lb_update.bat code:


        @echo off call Liquibase --changeLogFile=update.xml



update.xml code:


        <?xml version="1.0" encoding="UTF-8" standalone="no"?>

        <databaseChangeLog xmlns=“http://www.Liquibase.org/xml/ns/dbchangelog/1.9

        xmlns:xsi=“http://www.w3.org/2001/XMLSchema-instance

        xsi:schemaLocation=“http://www.Liquibase.org/xml/ns/dbchangelog/1.9                http://www.Liquibase.org/xml/ns/dbchangelog/dbchangelog-1.9.xsd”>

       

       



master.xml code:


         <?xml version="1.0" encoding="UTF-8" standalone="no"?>

         <databaseChangeLog xmlns=“http://www.Liquibase.org/xml/ns/dbchangelog/1.9

         xmlns:xsi=“http://www.w3.org/2001/XMLSchema-instance

         xsi:schemaLocation=“http://www.Liquibase.org/xml/ns/dbchangelog/1.9 http://www.Liquibase.org/xml/ns/dbchangelog/dbchangelog-1.9.xsd”>

         

       

       

            SELECT NVL(MAX(id),0)

            FROM databasechangelog

            WHERE author=‘MajorVersion’

           

           

         

                  



The expected result when the lb_update.bat is executed, a confirmation message will appear saying: Migration successful. 


How can i fix this please help! Thanks!