[psy_wombats]

You can create a booolean variable by right-clicking on the front panel of the VI and selecting Modern and then navigating to the Boolean palette. There should be options there. An indicator/controller will appear on the backpanel.

To init the boolean, you can wire a constant to it, and then reference the boolean by local variables, (created by right-click on the object > create > local variable). The initial value will only be used when the indicator hasn't been accessed by a local variable and updated.