Parameter-from-attribute connections use the value of an attribute as the parameter to a connection. As with other connection types, a parameter-from-attribute connection is initiated from the source part's Connect choice in the pop-up menu and is terminated by clicking mouse button 1 over the target connection line requiring the parameter. The appropriate attribute is then selected from the pop-up menu for the connection. A parameter-from-attribute connection was used in building the To-Do-List sample. When we connected the Text part's object attribute to the connection between the Push Button part and the ordered collection part, we were making a parameter-from-attribute connection. Refer to Event-to-action connections for the specific connection details for the To-Do List sample. The following example also illustrates the use of the parameter-from-attribute connection:

When text is typed into the Text part and the push button is pressed, the label string will be set to match the text in the Text part.