run filter queries after post filter

[Rohit Harchandani]

Hey,
I am using solr 4.0 with my own PostFilter implementation which is executed
after the normal solr query is done. This filter has a cost of 100. Is it
possible to run filter queries on the index after the execution of the post
filter?
I tried adding the below line to the url but it did not seem to work:
&fq={!cache=false cost=200}field:value
Thanks,
Rohit