Only bind zlock if the controls exist
Only bind zlock if the controls exist

gallantlab/pycortex,gallantlab/pycortex,smerdis/pycortex,CVML/pycortex,CVML/pycortex,CVML/pycortex,gallantlab/pycortex,smerdis/pycortex,gallantlab/pycortex,smerdis/pycortex,gallantlab/pycortex,CVML/pycortex,smerdis/pycortex,CVML/pycortex,smerdis/pycortex