Implementing External Action Blocks › Design › Create the Calling Procedure Step or Action Block

Create the Calling Procedure Step or Action Block

Use the Action Diagramming tool to create an action diagram for each procedure step or action block. To access an External Action Block, a procedure step or action block calls an External Action Block with the USE statement.

The data passed to, and returned from, the External Action Block is defined by view matching in the action diagram of the procedure step or action block that uses the External Action Block. You must define the External Action Block before you can perform the view matching. The view matching is done in the action diagram of the calling procedure step or action block. When you invoke a USE action, match the views of the External Action Block to the views of the procedure step or action block that is calling it.