How set "startTime" when adding worklog through REST API?

How set "startTime" when adding worklog through REST API?

Hi
 
I can´t seem to figure out how to set "startTime"(and "endTime") when adding a worklog through REST API.
 
This is the INPUT_DATA:
<Operation><Details><Worklogs><Worklog><parameter><name>startTime</name><value>1394460603088</value></parameter><parameter><name>description</name><value>Rebooted computer</value></parameter><parameter><name>technician</name><value>Stern Howard</value></parameter><parameter><name>workMinutes</name><value>1</value></parameter><parameter><name>workHours</name><value>0</value></parameter></Worklog></Worklogs></Details></Operation>
 
The worklog is successfully added to the request but no startTime is set.
 
I´ve also tried to include "endTime" and "executedTime" in the INPUT_DATA as well with no result.
 
 
Is it not possible to specify start/end time when adding worklog through REST?
Or what am I doing wrong?
 
Kind regards
Blixten

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