title: No substitution in httpCustom payload
body: <p>I would like to make a httpCustom payload in OCB but no replace info properly. I think i have tested all the ways i know but no results, someone who could help me. This is my code:</p>
  <pre><code>&quot;notification&quot;: {
              &quot;httpCustom&quot;: {
                  &quot;url&quot;: &quot;http://xxxx.xxxx.xxxx:8080/api/v1/telemetry&quot;,
                  &quot;payload&quot;: &quot;[{ %22temperature%22: %22${id}%22, %22humidity%22: %22${humidity}%22, %22battery%22: %22${battery}%22 }]&quot;
              },
              &quot;attrs&quot;: [
                  &quot;temperature&quot;,&quot;humidity&quot;,&quot;battery&quot;
              ]
          },
  </code></pre>
  <p>I have no error when i do subscription, but when i test in my end point no replace for the macros ${...}, the payload take object information compose but with no values.</p>
  <p>I have test to write/send ${id} as then value of a field in payload and no substitution at all. Test it with URL encode and %22 and no success, I think could be disable substitution ? but i have check it and it has FALSE value.</p>
  <p>This is a http response:</p>
  <pre><code>{
    &quot;method&quot;: &quot;POST&quot;,
    &quot;path&quot;: &quot;/&quot;,
    &quot;query&quot;: {},
    &quot;headers&quot;: {
      &quot;x-forwarded-for&quot;: &quot;3.124.211.58&quot;,
      &quot;x-forwarded-proto&quot;: &quot;https&quot;,
      &quot;x-forwarded-port&quot;: &quot;443&quot;,
      &quot;host&quot;: &quot;83efe9565d48d8bc8cf298d7786b8042.m.pipedream.net&quot;,
      &quot;x-amzn-trace-id&quot;: &quot;Root=1-5f1bddce-7f2b4277458e77b98c0920d1&quot;,
      &quot;content-length&quot;: &quot;54&quot;,
      &quot;user-agent&quot;: &quot;orion/2.1.0 libcurl/7.29.0&quot;,
      &quot;fiware-service&quot;: &quot;example&quot;,
      &quot;fiware-servicepath&quot;: &quot;/example&quot;,
      &quot;accept&quot;: &quot;application/json&quot;,
      &quot;content-type&quot;: &quot;application/json&quot;,
      &quot;fiware-correlator&quot;: &quot;a7fcfe32-ce47-11ea-9723-0242ac14000a&quot;,
      &quot;ngsiv2-attrsformat&quot;: &quot;custom&quot;
    },
    &quot;bodyRaw&quot;: &quot;[{ \&quot;temperature\&quot;: \&quot;\&quot;, \&quot;humidity\&quot;: \&quot;\&quot;, \&quot;battery\&quot;: \&quot;\&quot; }]&quot;,
    &quot;body&quot;: [
      {
        &quot;temperature&quot;: &quot;&quot;,
        &quot;humidity&quot;: &quot;&quot;,
        &quot;battery&quot;: &quot;&quot;
      }
    ]
  }
  </code></pre>
  <p>Orion Versión: 2.1.0 and tested in 2.4.0</p>
  <p>Any help ? Thanks in advance !!</p>