BUG: register_multimodal: fixed bug
BUG: register_multimodal: fixed bug

Former-commit-id: 363b8a200ba0a055089d4b4e53b1681f6a5b6000 [formerly 263b0528f594d5df4d85e10e955801aeb93c118b]
Former-commit-id: 783622b87ff4c4b74c393c5b35ded51887598342
Former-commit-id: cbf574db16a172fd9016ea20d4a750fd31d3d500
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox