Radio button automatically selected with a blank default value

[AchatesChen]

I am having a strange issue with a quiz app. 

I switch questions and answers by increasing the question id within the same screen. It works fine except when two continuous questions have same answers. e.g. if I selected the (a) in first question, then the answer (a) of second question will be selected automatically without clicking, although the default value is blank (I use default value for user to looking back to pervious selection). 

What could the reason?

[hantsjoel · Accepted solution]

Hi @AchatesChen,

Perhaps utilising the Reset property of the radio button might be the way to go.

See v-xida-msft's solution described in this thread... hopefully it will work for you: https://powerusers.microsoft.com/t5/Building-Power-Apps/Disabling-a-radio-buttons-to-blank-in-a-gall...

Cheers

Joel

[AchatesChen]

@hantsjoel Thank you so much! It do resolve my issue.