WD does not respond to 100% humidity reported by metar data

I download the humidity and baro readings from CYOW airport. If the metar data reports 100% humidity then WD ignores this and continues to report the old value. If I manually edit the metar file and set humidity to any value other than 100% then WD accurately reports this value. It ignores a value of 100%. Has anyone elese seen this?

i will have a look at this now
can you email me a example metar with 100% hum please so i can test
The extra digit will be the problem

this is ok, me hope, in vers 9.76e