Problem with Tomcat

I recentlly installed Prizm EMS 2 in Red Hat Enterprise Linux 4 ES, the admin tool sucessfully tested de jdbc conector for MySql, the Prizm service also Starts Sucessfully but when i want to start the prizmtomcat service to access the Prizm gaves me this error "The JAVA_HOME enviroment variable is not defined correctly, could not found java executable"

I saw the jvm config file and it is mapped well, so i dont now the root of this problem.

Thanks in Advance.