[GAP Forum] which function of gap can display the result of hilbert function of Singular?

[Lee Martin CCNP]

Hi 
I:= Ideal( R1, [x*y+x*z, x*y+x*y*z+x, x*z+x*y*z+x] );S:=SingularInterface( "stdhilb", [I], "ideal");HF := GeneratorsOfIdeal(S);
which function of gap can display the result of hilbert function ?
because above result should be1/(1-x)^2;
Regards,
Martin