Once a flexible hose route is created, you can edit the hose and adjust the length by changing the tension of the hose segment or you can lock the hose length.

What's New: 2019
To calculate hose length accurately, you need to lock the hose length to keep the hose length from changing when components move or shift. Locking the hose length prevents the length of the hose from changing due to adaptivity. There are 2 ways to lock the hose length: You can lock flexible hose length directly using the Hose Length dialog box, or by adding a length dimension to a flexible hose in the graphics window.
When the hose length is locked:
To Lock Flexible Hose Lengths from Hose Length dialog box
 On the ribbon, click 
		Route tab
 On the ribbon, click 
		Route tab 
		  Manage panel
 
		Manage panel 
		  Hose Length.
 
		 Hose Length. 
	 To Lock Flexible Hose Lengths using the Length Dimension Command
 3D sketch tab
 3D sketch tab  Constraints panel
 Constraints panel  General Dimension
 
		 General Dimension 
		 .
. 
	 Adding a length dimension to a flexible hose route enables the Lock Hose Length setting in the Hose Length dialog box.
 On the ribbon, click 
		Route tab
 On the ribbon, click 
		Route tab 
		  Manage panel
 
		Manage panel 
		  Hose Length.
 
		 Hose Length.