Error with onMessage function

[miczmc]

2018-12-09 23:34:04.899 (MELCloud) Update unit XXXXXXX information.
2018-12-09 23:34:04.899 Error: (MELCloud) 'onMessage' failed 'UnboundLocalError':'local variable 'setModeLevel' referenced before assignment'.
2018-12-09 23:34:04.899 Error: (MELCloud) ----> Line 444 in /root/domoticz/plugins/Melcloud/plugin.py, function onMessage
2018-12-09 23:34:04.899 Error: (MELCloud) ----> Line 194 in /root/domoticz/plugins/Melcloud/plugin.py, function onMessage
2018-12-09 23:34:04.899 Error: (MELCloud) ----> Line 406 in /root/domoticz/plugins/Melcloud/plugin.py, function domoticz_sync_switchs

[CousinsP]

I don't know Python, but I think I can see the problem, In lines 400-404 it's possible that setModeLevel doesn't get set, and is used later on. I just need to find out how if then else constructs work in Python, then might be able to resolve. The variable probably needs setting to a default at the beginning of the domoticz_sync_switchs function. But what should the default be?