sorry for the late reply
I added a Header String into my program, from that in [request] I can
{.set|Header_String|{.header|My_Custom_Header_String.}.}
Then from that, I can manipulate the Output - in many different ways.
Including
{.exists|Z:\Some_Path\{.^Header_String.}.} = Is file 404 ?
what you get by passing by the "header_string" variable?
you can {.exists|Z:\Some_Path\{.header|My_Custom_Header_String.}.}
How do I get 404's to a string in Events ?
i don't understand what you mean