Creating a clear association action
You can create a Clear Association Action through an Activity Diagram or a Modeler pane.
To create a clear association action through an activity diagram:
1. On the Activity Diagram tab, click the arrow in the split button that is to the right of the 
Accept Event Action button, click the 
Clear Association Action button, and then on the Activity Diagram, click in free space or within an Activity Partition, Interruptible Activity Region or Structured Activity Node.
Accept Event Action button, click the Clear Association Action button, and then on the Activity Diagram, click in free space or within an Activity Partition, Interruptible Activity Region or Structured Activity Node.2. From the Select Object dialog, select the Association that is to be the Linked Item, and then click OK.
3. Type the name of the Clear Association Action, and then press the Enter key.
Modeler creates the Clear Association Action and on it creates the default Input Pin input pin.
To create a clear association action through a Modeler pane:
1. In a Modeler pane, right-click the Activity or Structure Activity Node that is to own the Clear Association Action, and select > > .
2. From the Select Object dialog, select the Association that is to be the Linked Item, and then click OK.
3. Type the name of the Clear Association Action, and then press the Enter key.
Modeler creates the Clear Association Action and on it creates the default Input Pin input pin.