Update a Search para incluir el flag que indica si el usuario quiere una cita presencial

- Y se pasa a la proxima pantalla

screens/main/Search.js

 import firebase from 'firebase'
 import { firebaseConfig } from '../../config/firebaseConfig'
   
+//Flag to indicate an IRL appointment.
+var mapflag = false
 
 if (firebase.apps.length === 0) {
   firebase.initializeApp(firebaseConfig)
     //reset the users usestate to empty
     const users = []
     
-    
 
     const db = firebase.firestore()
     var query = db.collection('Interprete')
     
     for (let i = 0; i < tags.length; i++) {
+
+      //Reset Flag.
+      mapflag = false
+
       //check which tags where called in the search 
       if (tags[i].id === 'PL') {
         console.log('Presencial')
         query = query.where('Modalidad.Presencial', '==', true)
+        mapflag = true
       }
       if (tags[i].id == 'ON') {
         query = query.where('Modalidad.Online', '==', true)
         }
         users.push(user)
         setUsers(users)
+        
       });
     });
     console.log('These are the users after the query is executed: ',  users)
   
   function dothing(item) {
     console.log('This is the item id: ', item)
-    navigation.navigate('Calendar', {Intereprete_id: item})
+    navigation.navigate('Calendar', {Intereprete_id: item, Flag: mapflag})
   } 
 
 }