Migration ticket fails 🤔

Hi! I can’t pass this ticket…I don’t know why…this is my code:

  1.    const host = "mongodb+srv://m220student:m220password@mflix-x5uvt.mongodb.net/test?retryWrites=true";
    
  2.     const predicate = { lastupdated: { $exists: true, $type: "string" } }
         const projection = { lastupdated: true }
    
  3.      const { modifiedCount } = await mflix
                   .collection("movies")
                   .bulkWrite(moviesToMigrate, { ordered: false })
    

the test code:


I don’t know if I’m missing something…can please someone help me ? thanks!