Hi everybody, I am stuck with the following problem. I would appreciate it very much if you could help me with it. So I have a ZPT where a macro is defined with several slots; one of the slots like below: <tal:block metal:define-slot="slot_issue"> SLOT DEFAULT CONTENT </tal:block> The common way to put other content in the slot is: <tal:block metal:fill-slot="slot_issue"> CUSTOM SLOT CONTENT </tal:block> Now, in a ZPT that uses the above marco I want to replace the default slot content with other stuff *only* if a condition is fulfilled: <tal:block tal:condition="<condition-code>" metal:fill-slot="slot_issue"> CUSTOM SLOT CONTENT </tal:block> If the <condition-code> returns True then the "CUSTOM SLOT CONTENT" is put instead of the default slot content - correct. If the <condition-code> returns False then nothing will be displayed - this is not correct?!. I also tried somthing like: <tal:block tal:condition="<condition-code>"> <tal:block metal:fill-slot="slot_issue"> CUSTOM SLOT CONTENT </tal:block> </tal:block> In this case the content of the slot is "CUSTOM SLOT CONTENT" in both cases - the result is True or False. The only solution that I can think of is not elegant at all because I have to duplicate the slot_issue's default content: <tal:block metal:fill-slot="slot_issue"> <tal:block tal:condition="<condition-code>"> CUSTOM SLOT CONTENT </tal:block> <tal:block tal:condition="python:not <condition-code>"> SLOT DEFAULT CONTENT </tal:block> </tal:block> Is there other wat to accomplish this? Thank you very much, Dragos