Validate simultaneously Textbox And Radio Option in Form

Hello, i have a text box and a radio button and i am trying to simultaneously validate the value entered iin the textbox and in the radio (in the form the id of the radio button is  radio_tipoobra)

For some reason i cannot make this work, appreciate some help thanks....

import java.util.Arrays;
import org.joget.apps.form.model.Element;
import org.joget.apps.form.model.FormData;
import org.joget.apps.form.service.FormUtil;

String id = FormUtil.getElementParameterName(element);
String amount = "";
if(values.length > 0){
    amount = values[0];
}

if(amount.isEmpty()){
    formData.addFormError(id, "No value for input!");
    return false;
}else{
    float amountF = Float.parseFloat(amount.replace(',', '.'));
    if((amountF >1000000) && (#binder.dadosrisco.radio_tipoobra# == 'reab')){
        formData.addFormError(id, "Error, max value allowef for reab is 1 000 000,00€ ");
        return false;
    }
}

return true;

Error: