When building a form, the 'title' element properties includes a drop-down to select 'source data item for title'. The help states: "Use this select box to choose a custom element whose value should be used as the entry title." There are no entries in the drop down and I don't know what it is referencing.
I have defined several custom elements in the ...ssf/WEB-INF/jsp/custom_jsps folder which I use in various forms i have built. What is this drop down referring to?