help writing new l s= strings in module

[josecar]

Hello, I managed to add new l s strings to one particular module template, so the string field appears in the corresponding translation file and in back office for completion.

 

But it now seems I cannot do the same again with other modules/templates. I cannot see a reason, so maybe there is a trick/limitation/workaround. Maybe something like "have you checked x?" or "did you do it that way?"... I'm stuck, I'd appreciate any help