Hi people, this is an old quesion but I tried creating a Maya locater with custom attribute and put TCL expression
[mattr "myLocater.myAttr" $f]
in the channal of the Slim shader.
it all renders fine when I manually change the attribute on the locater.

but problem is , when I actually key the attribute in Maya, the render doesn't refresh the value change anymore, it seems always stick to the first frame.

I'm all new to Slim and using renderman studio with slim 9 in school, and having a hard time figuring out what needs to be changed.
somebody mentioned using a ribbox to make sure the rib gets refresh value from maya every frame, but how can I find the syntax doing it? I'm lost in the doc now... there is the earlier MTOR part, but that is a little mismatching....

any information would be more than helpful
thanks!

well,  Figured out myself... how dumb I am.....
instead of a lower case f,
[mattr "myLocater.myAttr" $F]
is what going to work with maya key frames
.........................