Issue with Radio button Field

Question

Hii, 
 I am unable to select NA option , for YES or NO Its working fine , how can i resolve this, 
 i have to save a!radioButtonField(
 label: "",
 choiceLabels: { "Yes", "No", "N/A" },
 choiceValues: { 1, 0, "NA" },
 value: fv!item['recordType!{f42d5bd8-9c50-4910-b251-13ec6bf9fdb6}GAI App Review.fields.{899275d5-d9e3-4030-9291-883eaf45d2c6}reviewerAnswerBool'],
 saveInto: {
 local!a,
 a!save(
 fv!item['recordType!{f42d5bd8-9c50-4910-b251-13ec6bf9fdb6}GAI App Review.fields.{899275d5-d9e3-4030-9291-883eaf45d2c6}reviewerAnswerBool'],
 if(local!a = "NA", {}, local!a)
 )
 }, this value in to boolean type column

Mike Schmitt · Answer

Your main issue here is that you also need to do some trickery in the "value" field to make it work. Without some more advanced trickery, you will need to settle on the radio button starting off with a default selection of "N/A" when the user has not yet made any selection. Otherwise an approach like the following should be very easy: 
 
 a!localVariables(
 local!booleanValue: toboolean(null()),
 
 a!radioButtonField(
 label: "3-way boolean selector",
 choiceLabels: {
 "Yes",
 "No",
 "Null Value"
 },
 choiceValues: {
 true(),
 false(),
 "null"
 },
 value: if(
 a!isNullOrEmpty(local!booleanValue),
 "null",
 local!booleanValue
 ),
 saveInto: {
 a!save(
 local!booleanValue,
 if(
 save!value = "null",
 null(),
 save!value
 )
 )
 }
 )
)

Issue with Radio button Field

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