Hi Nan,
If it is a Boolean Constant (ie: FALSE), you cannot change it because it is a Constant FALSE.
The way to do it is to change it to a Control, initialize it to FALSE, then create a Property Node for Value in which you wire the last value to it. Another way is to create a Local Variable (Property Node preferred).
But you are correct, you cannot change the value of a Constant Boolean... A Constant FALSE cannot obtain a TRUE value.
RayR
