State machine diagram triggers UML question

[AlecJames]

In the trigger properties I can define more than one trigger that is added to the trigger list. (EA 10)

For the trigger to assert, do all triggers have to fire (AND) or does just one in list need to fire (OR), or have I missed a means of definining some and/or logic to triggers?

Thanks for your help.
A

[Nizam Mohamed]

Excerpt from UML definition

A transition is enabled if and only if:
• One of the triggers of the transition is satisfied by the event (type) of the current occurrence.
An event satisfies a trigger if it matches the event specified by the trigger.
In case of signal events, since signals are generalized concepts, a signal event satisfies a signal event associated with the same signal or a generalization thereof.

[AlecJames]

Thank you.

Could you give me a link to the document that contains the quote?  

[qwerty]

It's probably Superstructure from the OMG.org website. There are a couple of versions. 2.4 is recent and 2.5 in beta.

http://www.omg.org/spec/UML/

q.

[AlecJames]

Got it
http://www.omg.org/spec/UML/2.4.1/Superstructure/PDF/

Thanks
A