Fill in the Fluent-bit configuration parameters in the Instance Parameter field. You can use the <parameter> tag to specify certain parameters of your instance. The name for the Fluent-bit configuration parameter is conf_text. Because the Instance Parameter itself is written in XML we have to escape our Fluent-bit Configuration File. You can use an Online XML escape tool (for instance appdevtools).
The escaped form of the configuration would be something similar to:
<?xml version="1.0" encoding="UTF-8"?>
<instance>
<parameter id="input">{
"name": "mqtt",
"tag": "YOUR_TAG_NAME",
"port": 1883
}</parameter>
<parameter id="output">{
"name": "forward",
"match": "YOUR_TAG_NAME",
"host": "<IP>",
"port": 24224
}</parameter>
</instance>
Don't forget to correctly fill in your computer reference, Instance name, url etc.
Finally click Proceed to request the instance.