associate an Action to an operation

[Guillaume]

I'm working on an activity diagram which includes calls to interfaces' operations.

I can drag/drop an existing operation from an interface into the activity diagram which results in a new Action element to be generated. Changing the name of this action then displays the up to date name of my interface + operation: (interface :: operation)

Question:
If I have a new "blank" action in my activity diagram, how do I associate it with an existing operation so it results in an action as created through an operation drag/drop (described above).
I can't seem to be able to access the association of an action element with an operation to create/update/delete it.
The only thing I found was that in the Action custom properties, "Kind" is set to the value CallOperation

Any help with this will be much appreciated!

Thanks

[Guillaume]

I actually found the solution... Go to Advanced > set operation...