Problem with curve modifier

I want to add a curve modifier to a cylinder to create the wire on a washing line, but the cylinder doesn’t follow my path. Is this a glitch or am I missing something obvious?

Blender file: https://www.dropbox.com/s/rgu3h3ea5j9b65y/Bergerac.blend?dl=0

You will need to subdivide the length of the cylinder to enable it to bend


Alternatively for things like wires / cables you can use the curve itself.
Set it’s Fill setting to ‘Full’
Set the Bevel / Depth for the wire thickness
Increase Bevel Resolution for the roundness of the wire


Thank you!