VUMAT double precision

Hi all,

Can anybody help me out running a VUMAT with double precision?

If I define my variables in VUMAT as double precision and run "abaqus user=... job=..." the values do not match those in the inp file.

On the other hand, if I run "abaqus double user=... job=... " I get the following error:
Abaqus Error: Abaqus/Explicit user subroutines cannot be supplied as an object
file when double precision is used.
Abaqus/Analysis exited with error(s).

I know maybe it's a stupid question but I'd really appreciate if someone could give me a hint.