Trying to copy value of event into map if not nil or 0

[tomer (tomer zaks)]

Hi I am trying to copy value of event into map if not nil or 0, but I am getting a "_aggregateexception" error. I will be happy for help:
I am writing in the code part:
event.each { |k, v|

if( event[k] != nil)
if(event[k].eql? '0')
#do nothing
else
map[k] = event[k]
end
end
}