I'm sending an analytics events from the HTTP SOAP API, it contains a CustomTag. The event gets POSTed successfully. An Event Server background plugin which reads events, successfully gets the event but the EventHeader.CustomTag field is empty/null.

I tested if it is possible to see CustomeTag through samples and I could see them. Can you please see following instruction and see if it is possible for you to work?

Start TriggerAnalyticsEventXML and send Analytics Events with custom tag.

Open AlarmEventViewer sample code and add following code in line 79 in MainForm.cs to see CustomTag -

new DataGridViewTextBoxColumn() {HeaderText = “CustomTag”,Width=50},

Start AlarmEventViewer sample and select Analytics Event. See CustomTag in the dialog.

https://doc.developer.milestonesys.com/html/index.html?base=samples/analyticseventxml.html&tree=tree_3.html

https://doc.developer.milestonesys.com/html/index.html?base=samples/alarmviewer_sample.html&tree=tree_2.html

Strangely, it started working fine after I restarted the event server 3 or 4 times.

Regardless, thank you very much for your example.