Cloth Belt Tag cape pulling away during animation

Hi there

Im sure there is a simple solution but iv not found it.

I want to add a cape to rigged character, so I make cape to be cloth, and body to have cloth collider.  I added a cloth belt to cape, and picked the character body to belt on.  I select verts from both the cape edge and the character edge and set the verts.  When I move the character the belt is not keeping up with the characters movement so is pulling away from it.  I tried putting a priority tag on it but it makes no difference.

Demo file added.

Thanks, Dan