I’m replacing the rear suspension hydraulic cylinders and hoses on my 87 300TDT.

I can’t figure out how to connect the new cylinder and flex hose to the hardline fitting. The fitting on the hardline doesn’t move. I expected it to rotate like a brake line fitting. I’ve circled the fitting in the pic.

Is the fitting supposed to rotate or am I missing a trick to the hose on?

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92 300D. 163K. Brown on Beige
87 300TDT. 213K. Black on Saddle.
85 190D. 183K. Red on Saddle
83 280SL. 165K. Champagne metallic
87 300TE. 240K KM. Parts for the 300TDT
87 300D. Thanks DieselPaul
84 190E.