title: Azure CosmosDB Trigger to update a Collection based on Value in another Collection
body: <p>I have to update a cosmosDB Collection(let be collection-1) based on value of a column in another cosmosDB Collection(let be collection-2). The collection-1 should be updated with values from other collections like collection-3 and collection-4. i have tried with writing post trigger in Collection-2 but stuck while writing function inside trigger.</p>
  
  <p>Please suggest whether it is possible with CosmosDB Trigger or suggest If there Is any alternative way to achieve this.</p>
  
  <p>I have created a new trigger function for cosmos DB. </p>