Hello I found this article: Updating Project Server custom fields via JSOM. This article explain about how to update custom field value in Project.
In my case, I am trying to update custom field value in Tasks. But, I got an error :
PS_DraftTask has no method 'setCustomFieldValue'
Can we update custom field in Tasks? I have managed update some value like
Name which is standard field in Tasks. My code not to different with the article, but if you want to see it, let me know.
Thanks a lot.