Execute instance action (INSTANCEACTION)

The function runs the action named in action_name passing optional parameters. The action called must be implemented in the data type context of the data type for the currently selected instance.

Parameters:

• act_name - action name for the database action as defined in the database context class.

• parm - parameters passed to the action.

• -Dn - re-direction to other data source.

• -Cn - re-direction to other collection in the hierarchy or in the data source referenced by -Dn.