@piedone I have the same pb as Sergey and I have read the doc (thanks for the RTFM :) ), and also read your code, and tried it
Problem is that my Custom Type (processed by the Form) has no Title Part and no Autoroute.
If I add your Title Part, the user of the custom form must input it, and this is not what I am looking for.
I only want to have the submissions named with something as custom_prefix_Name_Firstname, rather than a number.
And I don't understand how to do this without writing some code, which was not my intention.
Is the idea to suppress the part title from display using a placement file ? But how to install automatically the values in Title ?
Could you help ?