When I am passing string "1_new" in $phoneNumber attribute than not showing attribute in revenuecat dashboard

[AjayGol]

react-native-purchases:^7.3.0

I have set $phoneNumber attribute in react-native-purchases. -

Purchases.setAttributes({
onBoardingTypePurchase: 'default_onboard',
$phoneNumber: '1_new' });

$phoneNumber not showing this attribute in revenue cat dashboard