You can add and define properties for controls from the Robot StudioPalette.
Design blocks for properties always display a purple P icon. The event ports for properties are used to trigger the property to pull data to the input data port and output a trigger after the input trigger occurs. The data ports are used to input or output data for the property. Note that for some properties, you can statically set the value of the property by clicking under the Properties label and typing a value.
The following figure shows a Text property for a TextBox control: