problem in partitionning

Hello

I'm using Parmetis 4 in order to partition mesh for a CFD tool.

The command used is :
call METIS_PartGraphRecursive(nelem,1,nelemconn,elemconn,dummy_null, &
dummy_null,dummy_null,npart,dummy_null,dummy_null,&
options,edgecut,color)

METIS routine is well performed, however there is only one partition. May be I have misunderstood one option?

Is anybody can help me?

regards
David