How to add custom field to the task via CSOM?

Question

Hello!
I'm trying to add custom fields to my programmatically created task in project 2013. Tasks are created. Then I get them and load custom fields by:
DraftProject projCheckedOut = tstProj.CheckOut();
projContext.Load(projCheckedOut.Tasks);
projContext.ExecuteQuery();
foreach (var task in projCheckedOut.Tasks)
projContext.Load(task.CustomFields);
projContext.ExecuteQuery();
But the each CusomFieldCollection object has only 1 field (Health, because it have a default value and created automatically). But when I load my project in Project professional i saw more than 1 field, but they are empty.
Then I tried to add a new custom field to each CusomFieldCollection of each task.
var newField = new CustomFieldCreationInformation();
newField.FieldType = CustomFieldType.TEXT;
newField.Name = "F_1";
newField.Description = "test description";
task.CustomFields.Add(newField);
task.CustomFields.Update();
New field added to the collection, but when I update the project and publish it nothing is happened.
How to add a custom field to the each task and set it value?
Or how to attach enterprise task custom field to my tasks.
I'm using Microsoft.ProjectServer.Client.

Answer 1

Hi
Hope the below posts are of some  helpful for you 
http://social.msdn.microsoft.com/Forums/en-US/d79f22f2-7fd2-46af-b778-e189c8611120/use-csom-to-update-projects-custom-fields?forum=project2010custprog
http://msdn.microsoft.com/en-us/library/microsoft.projectserver.client.project.setcustomfieldvalue.aspx
Thanks
Geeth
Geeth If you feel that the answer which i gave you is Helpful please select it as Answer/helpful.