This is a LabVIEW programme question. Aim is when the vertical slide is greater than $4,$ by making boolean switch on and off make it act like a photointerrupter and calculate outputs of velocity distance and acceleration. So my problems:

$1-$ I can not connect the boolean switch and vertical slide at the same time that when vertical slide is greater than $4$ and switch is on make a calculation. How should i make the connection?

$2-$ How can i calculate the acceleration as I did in velocity and distance? Velocity and distance measurments are correct however i couldn't add a acceleration measurement.

Tell in detail please and provide diagramme if possible. Thanks...