I have created a jar containing a custom function. This works correctly within reports in JasperStudio I want to use the custom function to output a calculated field within a JasperServer domain. I am struggling to make this work. I have loaded the JAR into the webappsjasperserver-proWEB-INFlib I can't see the correct syntax/additional configuration required to use this function in the CalculatedField expression box I have attempted to add it to the applicationContext-el.xml, but all that happens is that JaspereServer passes the function down to the database. Is what i am trying to do possible?