Exception on setting attribute filters

[sergirubio]

This settings:

PySignalSimulator.AttributeFilters = PNV: ['state','PLCAttribute']

Provokes this exception:

VaccaPanel.setModel.get_attrs_form(TEST/SIM/EVENTS,[" ['state'", "'PLCAttribute']"])
MainThread WARNING 2016-11-01 09:48:30,967 VaccaPanel.TEST/SIM/EVENTS: Traceback (most recent call last):
File "/home/srubio/PYTHON/vacca/panel.py", line 464, in setModel
self._attrs.append(self.get_attrs_form(device=model,filters=attrs,parent=self))
File "/home/srubio/PYTHON/taurus/qt/qtgui/panel/taurusdevicepanel.py", line 375, in get_attrs_form
if a and searchCl(a.strip(),t.strip()):
File "/home/srubio/PYTHON/taurus/qt/qtgui/panel/taurusdevicepanel.py", line 65, in searchCl
return re.search(m.lower(),k.lower())
File "/usr/lib64/python2.7/re.py", line 146, in search
return _compile(pattern, flags).search(string)
File "/usr/lib64/python2.7/re.py", line 251, in _compile
raise error, v # invalid expression
error: unexpected end of regular expression