Deformer on deformer gone missing

Hi, ive been try rig my char, and somepart been planned using ‘deformer on deformer’ but everytime i deselect the deform, the curve deformer gone missing.

i made the deformer following the instruction on toonboom docs deformer on deformer wizard

when pressed done on the wizard it appear and works well, from in the node view also, deformer on deformer node also been made and connect properly like the image example on the docs.

how can i solve this problem or i missing something in the process?