Hi Maciej,
It works that way, thanks!
The strange thing for me is when I don't use Java in conditionExpression it works without fqcn e.g:
<itemDefinition id="_companyItem" structureRef="VisitorCompanyTO" />
<conditionExpression xsi:type="tFormalExpression" >company.company.id!=null</conditionExpression>
br,
Tadeusz