JESS: Help using multislot form from-class template

Hi Jess Users,

This is my first experience with Jess.
I declared my own template as a Java class, every (single) slot works.
But I wished also to add some multislots in my template, so I wrote:

public void setMymultislot(Value v)
    {
    }
   
    public Value getMymultislot()
    {
      return null;
    }

but Jess don't recognize it at all. It result with an error arguing my template has not a multislot with that name.
Where is the problem?

Many thanks in advance!

Davide Zambon