How to pass a Nullable`1 type value to a function in AX2009

Hi,

I am implementing a webservice.  I created the reference without problems.

In the script I run into the problem I have to pas a value to a function

  void  measurement.set_length(Nullable`1 type)

How can i pass a value to this Nullable`1 type?

In the generated source file I can see it is declared as a System.Nullable<decimal>

I tried :

measurement.set_length(System.Nullable`1<decimal>(110));

But the `sign is not allowed in scripts

measurement.set_length(System.Nullable<decimal>(110));

This gives a strange Table is out of range error..

Regards,

Rob