Steps to reproduce:

1. Use in-box opsgenie integration from https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/templates/media/opsgenie/media_opsgenie.xml?at=refs%2Fheads%2Frelease%2F5.0
2. Make the config for opsgenie target
3. Make a problem - we see, the problem is registrated  by opsgenie
4. Close the problem - problem status in opsgenie updates but he problem stays open

Result:

Problem status in opsgenie updates but he problem stays open

Expected:
Problem in opsgenie becomes closed

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It is wokring as expected on 4.4

I've investigate the subj the problem seems to be in post data

For a opening api-method is correct for opsgenie

For a closing it has to be different: https://docs.opsgenie.com/docs/alert-api#close-alert

But it Javascript code it is the same for both methods, thats why webhook script prefer to update alert not close it even the event_value param is 0