Hi, Lukas >> In WAComponent subclass i have the method: >> >> renderAddOn: html >> html form:[ >> html textInput callback:[ :value| self add: value]. >> html submitButtton text:'add']. >> >> Now i can render the textInput based on specific descriptionKey ? > > I don't quite understand what you intend to do with the textInput field. In other words: renderAddOn: html html form:[ anMAReferenceModel descriptionKey ....................as ???? changeAccesor ??? html submitButtton text:'add']. where anMAReferenceModel is one specific classModel for example: MANazionalityModel with specific descriptionKey -> MAStringDescription new ........ label: 'Nazionaliry name'; .......... or MAPhoneModel with specific descriptionKey -> MANumberDescription new ............label: 'Phone number'; ..... beInteger............ or MA ..... Model with specific descriptionKey -> ........ With this reference i think to have the input set to relative descriptionKey. I'm clear ?