Overview
Boolean control variables create on/off toggles that operators can adjust in the Control Room during live broadcasts. Use them to show or hide graphic elements in real-time, such as match clocks, sponsor logos, or player statistics.
You add Boolean variables in the FUSE editor's Control Variables panel, set a default value, then link them to graphic elements through visibility expression settings.
How to Add a Boolean Control Variable
Start by opening your graphic in the FUSE editor, then navigate to the Control Variables panel in the right-hand panel of the editor. From there, click Add Variable and select Boolean as the type. Give it a descriptive name, such as ShowTime, ShowScore, or AutoMode, so its purpose is clear later on. Next, set the default value to True or False - setting it to True means the element shows by default. Once you're happy with these settings, click to confirm and add the variable.
How to Link the Variable to a Graphic Element
With the variable created, select the element you want to control in your FUSE graphic and reference the variable in the element's visibility expression settings. Once linked, when the variable is False the element will be hidden, and when it's True the element will be visible.
How to Test and Publish
Before publishing, toggle the variable on and off in the FUSE preview to confirm the element appears and disappears as expected. Once verified, publish the graphic. After publishing, the new control variable will appear in the Control Room when this graphic is assigned to an event.