I found out the hard way (debugging all the details) that apparently I have to prefix the id of my listbox with the stack of controller_id's.
data ?= CL_HTMLB_MANAGER=>GET_DATA(
request = request
name = 'listbox'
id = 'c_tm_c_rl_c_rld_All_Pf' ).
where c_tm, c_rl, c_rld are the consecutive controller id's in the call stack and 'All_Pf' id the id of my ListBox element.
Is there a dynamic way to get these prefixes in stead of hardcoding them as I do now?
I just changed my app - added a controller in front - forgot to add the controller_id and my app broke down.