Vault API - update change order error

[Anonymous]

I am attempting to add a file to be tracked by a change order via the API. I am using the code below. I am not attempting to make any other changes to the change order. I get an unspecified system exception as in the attached. Am I filling in one of the UpdateChangeOrder parameters incorrectly? I have just filled in unused options with "null". 

long my_filemasterid = my_filetoadd.MasterId;

long[] my_fileids = { my_filemasterid };

my_coSvc.EditChangeOrder(my_co.Id);

my_coSvc.UpdateChangeOrder(my_co.Id, null, my_co.Title, my_co.Descr, my_co.Deadline, null, null, null, null, my_fileids, null, null, null, null, null, null, null, -1, null, null);

thanks,

Tim

[minkd]

Try passing the current change order number as the 2nd parameter.

[Anonymous]

I attempted that, but got the same error. Am I required to send a comment or email - or do I need to supply empty arrays vrs sending null values?

[JasonDai · Accepted solution]

Supplying empty arrays instead of null values would be a good idea to fix this issue.

[Redmond.D]

Generally in the Vault API, null is equivalent to an empty array.  I would expect this funciton to allow allow null values.  I'll log this as an issue.

[Anonymous · Accepted solution]

It looks like only addItemMasterIds is expected to have some sort of array, even if it is empty. All other array inputs can be null. So the following works just fine.

long[] null_array = new long[0];

my_coSvc.UpdateChangeOrder(my_co.Id, null, my_co.Title, my_co.Descr, my_co.Deadline, null_array, null, null, null, my_fileids, null, null, null, null, null, null, null, -1, null, null);