How to get a Turret's Distance to a Target ?

Hi, I am trying to figure out how to use turret.target.UID

Im making a td game where the projectiles move on the z axis but I need to get a distance to do that.

To get the distance on the XY planes first pick the object with the corresponding UID.

Pick object where object.UID=turretobject.turret.targetUID

then you can use the distance expression wherever you need to.

distance(turretobject.x,turretobject.Y,object.x,object.y)

This distance will remain the same though regardless of the objects Z-elevation as the objects XY position does not change.