[eclipse-clp-users] instantiation fault

Dear users!

When I run the following instructions:
(foreach(X,[1,2,3]), foreach(Y,[4,5,6]), fromto(0,In,Out,Exp) do Out is X*Y+In).
I get the right result i.e. 1*4+2*5+3*6=32.

I try to do the same, but using variables instead of constants in the second list.
(foreach(X,[1,2,3]), foreach(Y,[D1,D2,D3]), fromto(0,In,Out,Exp) do Out is X*Y+In).
Then I've got the instantiation fault. I want to get the result as follows:
1*D1+2*D2+3*D3.

Is there any possibility to do this in such a way ?

Greetings,
W.

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