Error !

KeyError: 'print'

%if publication['volume']: ${publication['volume']} %endif %if publication['print']: (${publication['print']}) %endif %if publication['pages']: p. ${publication['pages']} %endif
templates/imr/person, line 428:
%if publication['print']:
templates/imr/site, line 68:
/var/limecms/hi/lib/python2.7/site-packages/Mako-1.0.7-py2.7.egg/mako/runtime.py, line 899:
callable_(context, *args, **kwargs)
/var/limecms/hi/lib/python2.7/site-packages/Mako-1.0.7-py2.7.egg/mako/runtime.py, line 873:
_exec_template(inherit, lclcontext, args=args, kwargs=kwargs)
/var/limecms/hi/lib/python2.7/site-packages/Mako-1.0.7-py2.7.egg/mako/runtime.py, line 838:
**_kwargs_for_callable(callable_, data))
/var/limecms/hi/lib/python2.7/site-packages/Mako-1.0.7-py2.7.egg/mako/template.py, line 462:
return runtime._render(self, self.callable_, args, data)
/var/limecms/hi/hi-inst-01/Products/LimeTemplate/LimeTemplate.py, line 704:
html = mytemplate.render(object=object, site=site, request=self.REQUEST, extra=extra.get('kwargs', None), **extra)