Hi , i have an application running on jdk1.3.1,tomcat3.22,jsp1.2 along with taglibs. its working fine. i used BodyTagSupport for my custom tags and for for scripting variables ,made use of TagExtraInfo class and created array of VariableInfo. now i migrated the application on to jdk1.4,tomcat4.1 and i am using the same taglibs without any changes . It should work or will it throw any errors?