Is it possible to provide a list of allowed templates depending on a given key value ?

Hi, Jostein:

Thank you for your reply.

I've tried as your 5 steps as bellow.

1) use a TemplateListProvider

    I create a TemplateListProvider which include 3 Templates. Each Template is for one project.

2) Create a reference argument (ProjName)

   I create a value holder names ProjName as a argument to pass to the TemplateListProvider in step 1)

3)Pass the argument to the TemplateListProvider

    In the value holder reference to TemplateListProvider, I set a ListProvider argument as dynamic override and select the value from ProjName

So far, what I can't understand is even I set the argument(ProjName) as above, there's no place in the TemplateListProvider to catch(or set)  this argument for filter the templates in the TemplateListProvider.

Is there anything wrong in my steps ?

Or do I misunderstand what you said ?

Could you please show me more details ?

Thanks!