Change the state of a Checkbox from tri-state, to bi-state

Checkbox Layout Elements (LEs), by default, are tri-state: Yes (click to check), No (click to uncheck), and Unknown/Undecided (click to raise box). The following code example makes your checkbox bi-state (Yes/No), with "Active" being the name of your LE:

If @IsBlank(Active) Then
{
	Active = 1
}