I can successfully pass in/out/thru parameters using the Execute Pipeline snap - I couldnt get the Child Pipeline approach to work ($content, _param, $var, $_param never came out the other end) so will just Execute Pipeline with flow control items/choices - I’m feeling pretty confident now so thanks 🙂 And will be using the suggested python syntax when in Script snaps.
Mike
Sorry to come back on this thread but…
I can’t update/set a pipeline parameter via Mapper - when I type “_mypipelineparam” as the Target Path in a Mapper, it gets corrected to “$_mypipelineparam”. I finally worked out the param wasnt being set by dumping it out via a Mapper to copy param to $content then write to File Writer.
When I use a variable eg “$myvariable” in the Mapper, the value is set fine. Confirmed with the same dump to file flow.
But I am needing to use this dynamically calculated value (variable or parameter) as the URI/location for a File Reader snap which does accept a parameter (which I cannot set in the Mapper) but doesnt accept a variable (which I can set).
Is there a way to pass a dynamic value to File Reader? This is quite frustrating and seems inconsistent you can use $xx for some Snaps and not others, and that you can’t set _parameters in the Mapper. Again apologies for any newbie mistakes…
