In Drools 3 i used the following code (in a DSL file):

[when]ist BlaBlub=BlaBlub(number : id -> ( BlaClass.staticFunction(number ))

where id can be resolved be method getId in class BlaBlub and staticFunction ist a public static function in a helper class.

Drools 4 doesn't allow me this construct, how should this be migrated?

Any help is much appreciated

Cheers

Markus