Multiple Boolean Checkboxboxfield only one checkbox can be selected at a time

I need help with a concern. I have multiple record type fields that are boolean, and I need only one of them to have a value of true, while the rest should be null.

a!localVariables(
local!hearingSelected,
local!reminderSelected,
local!complianceSelected,

a!columnsLayout(
columns: {
a!columnLayout(
contents: {

a!checkboxField(
choiceLabels: {
"Hearing Required"
},
choiceValues: {
true
},
labelPosition: "COLLAPSED",
value: if(
ri!record['recordType!{8a8a403a-8fe2-4ed4-a3a3-9dd7b01f720d}SCA_IncidentTypev2.fields.{017a84f6-9869-4444-887a-3eddf23e1e97}hearingrequired'],
true,
null
),
saveInto: {
local!hearingSelected,
a!save(
ri!record['recordType!{8a8a403a-8fe2-4ed4-a3a3-9dd7b01f720d}SCA_IncidentTypev2.fields.{017a84f6-9869-4444-887a-3eddf23e1e97}hearingrequired'],
if(
isnull(
save!value
),
false,
true
)
)},
required: false,
choiceLayout: "COMPACT",
choiceStyle: "CARDS"
)
}
),
a!columnLayout(
contents: {
a!checkboxField(
choiceLabels: {
"Reminder Required"
},
choiceValues: {
true
},
labelPosition: "COLLAPSED",
value: if(
ri!record['recordType!{8a8a403a-8fe2-4ed4-a3a3-9dd7b01f720d}SCA_IncidentTypev2.fields.{edfd85a1-7524-4eeb-a1f3-a71da5e0f275}reminderrequired'],
true,
null
),
saveInto: {
local!reminderSelected,
a!save(
ri!record['recordType!{8a8a403a-8fe2-4ed4-a3a3-9dd7b01f720d}SCA_IncidentTypev2.fields.{edfd85a1-7524-4eeb-a1f3-a71da5e0f275}reminderrequired'],
if(
isnull(
save!value
),
false,
true
)
)},
required: false,
choiceLayout: "COMPACT",
choiceStyle: "CARDS"
)
}
),
a!columnLayout(
contents: {
a!checkboxField(
choiceLabels: {
"Compliance Required"
},
choiceValues: {
true
},
labelPosition: "COLLAPSED",
value: if(
ri!record['recordType!{8a8a403a-8fe2-4ed4-a3a3-9dd7b01f720d}SCA_IncidentTypev2.fields.{c058a7ed-fb86-46fd-9b9a-d8fe5de7f297}compliancerequired'],
true,
null
),
saveInto:
{
local!complianceSelected,
a!save(
ri!record['recordType!{8a8a403a-8fe2-4ed4-a3a3-9dd7b01f720d}SCA_IncidentTypev2.fields.{c058a7ed-fb86-46fd-9b9a-d8fe5de7f297}compliancerequired'],
if(
isnull(
save!value
),
false,
true
)
)},
required: false,
choiceLayout: "COMPACT",
choiceStyle: "CARDS"
)
}
)

}

)

)