We can currently create an output of a VF or service by selecting a property and declaring it as an output. However it should instead be possible to select an attribute and declare it as an output.

We need to be able to view the attributes in the VF/service in the same way as we can view the properties  and select a particular attribute as an output.

A workaround exists for now - you can create a property with the same name as the attribute on the relevant VFC and declare that property as an output. The correct tosca will then be generated for declaring the attribute as an output 

Proposal is to create a separate view for attributes with similar layout to the properties view (this will be consistent with VFCs which have properties and attributes in separate views). The view will have a tab for attributes and a tab for outputs and shall be possible to select an attribute and declare it as an output