Are you sure your Vector variable and Actor location are further than 100 units? Double check that they are.
I replicated your BP and got expected results.
Recreate the nodes just in case they aren’t sampling correctly.
EDIT:
Ok i just noticed that your attempting to find a path that is also 200 units on the Z Axis. If the navigation cannot find a valid path it wont return expected results.
Try removing the Z value on your Vector variable so it reads X:200.0 Y:200.0 Z:0.0
If you have trouble with Pathfinding, try visualizing it with some dummy actors along the Path Points.
