Hi,

I'm creating a sequence diagram where one object has to create one of two objects depending on the value returned by a previous call. I was trying to document this using an execution specification but I couldn't get anywhere. I was able to create the execution specification on the lifeline but couldn't set any values in the UML properties tab.

Where am I going wrong?

TIA
John Hunter

I'm not sure I understand your case fully, but I hope this will help:
Acording to my understanding of the UML2 standard, an "if... else..." case is expressed with a Combined Fragment containing 1 Interaction Operand for each case (1 for the "if", 1 for each "else if", 1 for the "else"...).

So if I understand you correctly, your case might be expressed by the example diagram following:


[img=http://img3.imageshack.us/img3/3307/sequence.png]


Tell me if this is not what you meant...