ReadVariableAction activity action in BoUML allows to choose a class and its attribute and returns the attribute through creation of output pin (see figure below and BoUML d
The semantic of the read/write/clear/add/remove variable actions in BoUML is ... wrong !
Clearly I misunderstood that part when I added the activities in BoUML, I didn't read well the norm to understood that concerns variable of the activity or a structured activity node. So by error the 'variable' I allow to choose is an attribute of a class. An other consequence is you cannot define variables for an activity nor structured activity node.
Mea culpa
BoUML 7.10 is available and fix the problem