To create a UserParameter you need to define:

• a key : it will be used by your zabbix server to request the UserParameter command to be executed.
• a command to execute. The output of the command will be given back to the zabbix server when it calls the key.

For exemple, if you define a UserParamter with a key “test” and a command “echo 1”, each time you request the item key “test” from the agent, you will get a “1”.

For something more useful you have to find the command to use which get the data you need from the android device. The command should output the needed data to stdout so that the Android Zabbix Agent can send it back to Zabbix Server.