Working with XPresso - MAXON CINEMA 4D R16 Studio: A Tutorial Approach - page 413

Figure 13-2 The c13_tut1_start.c4d file
Creating an Expression
In this section, you will create an expression in the XPresso Editor . Next, you will create
custom parameters using the Add User Data option.
1. Select Traffic-Lights in the Object Manager. Choose User Data > Add User Data from
the Attribute Manager menu, as shown in Figure 13-3; the Manage User Data dialog
box is displayed, as shown in Figure 13-4.
The options in the Manage User Data dialog box are used to add custom parameters to the
attributes of the selected objects. It can be added to every object whose parameters are
displayed in the Attribute Manager.
2. In the Manage User Data dialog box, make sure that the Properties button is chosen.
In the Properties area, enter Red in the Name text box and select Float Slider from the
Interface drop-down list, as shown in Figure 13-5. Next, choose the OK button in the
Manage User Data dialog box; the Red spinner along with the slider is added to the
User Data area in the Attribute Manager, as shown in Figure 13-6.
The Float Slider option in the Interface drop-down list is used to add a slider and a spinner
so that you can enter a value for specifying the user data parameter. It is the most com-
monly used user data parameter.
Next, you will add the Yellow spinner.