[FX.php List] modifying last find with a -script.presort

[AC]

As part of the FX find I'm trying to run a FM script.
Three are 2 problems I'm running into;
- if the FX find doesn't find any records then the FM script isn't run 
at all
- putting a modify last find in the FM script doesn't modify the find 
that was done by FX

I know it might make sense not to run the FM script if no records are 
found but I was trying to pass additional parameters required by my FM 
script into the find request so that the FM script could modify last 
find, read the parameters, clear the parameter fields, then redo the 
find and get the actual results.

Any suggestions?