Trigger checking for returned string - Web Scenario

[batagy]

Hi All,

I'd like to use 'Required string' feature in Zabbix Web Scenario. The wanted web reply content we want is literally "[]" , i.e. opening and closing square bracket.
But I'm not able to specify properly the regexp field, it seems.

The webpage answer if I query the same from Powershell is below:

PS C:\Users\user> Invoke-WebRequest -uri [URL]http://hostname/rest/tasks?f.State=Failed[/URL]

StatusCode        : 200
StatusDescription : OK
Content           : []
RawContent        : HTTP/1.1 200 OK
                    Pragma: no-cache
                    BackendHostname: servername
                    Content-Length: 2
                    Cache-Control: no-cache
                    Content-Type: application/json; charset=utf-8
                    Date: Tue, 30 Oct 2018 13:56:20 GMT
                    Expir...
Forms             : {}
Headers           : {[Pragma, no-cache], [BackendHostname, servername], [Content-Length, 2], [Cache-Control,
                    no-cache]...}
Images            : {}
InputFields       : {}
Links             : {}
ParsedHtml        : System.__ComObject
RawContentLength  : 2

Please note the Content field , literally []. Zabbix web scenarion should be green if we receive this. If Content not empty bracket, we should trigger alarm.
How can I specify 'Required string' for this?

I've tried these:
[]
\[\]
"[]"
\\[\\]

We use Zabbix 3.0.5.
Thanks in advance!

[batagy]

Hi!

Please ignore my question.
Escaped bracket is actually working properly in 'Required string': \[\]
It seems yesterday I made some mistake when testing.