How Do I...

Set connection parameters

Make attribute-to-script connections No tip for this topic Example: Supply a connection parameter Set constant parameter values

Parameter connections enable you to provide a parameter value to another connection. If a connection is shown as a dotted line, it requires one or more parameters.

There are three types of Parameter connections:

Parameter-from-attribute
Parameter-from-attribute connections use the value of an attribute as the parameter to a connection.

Parameter-from-script
Parameter-from-script connections run a script whenever a parameter to a connection is required. This connection is much the same as a parameter-from-attribute connection except that the value supplied to the connection is returned from a Smalltalk script instead of a part attribute value.

Parameter-from-action
Parameter-from-action connections use the result of an action as a parameter to a connection.

The connection is, by default, a purple line with a large dot at one end and a hollow dot with a square in it at the other end.
Parameter-from-action connection


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