i am using Adobe media server 5.0.10 and receiving errors

I am using the code below to call getNetStreamStat and I get the following error please

echo (file_get_contents('http://www.example.com:1111/admin/getNetStreamStats?auser=xxxxx&apswd=xxxxxxx&appInst=mynewapp=-1')); ?><code>Admin.API.MissingArgument</code>

<description>Expecting sids|streamids - Parameter not found!</description>

I am using the code below to call getApps and I get the following error please

<r

echo (file_get_contents('http://www.example.com:1111/admin/getApps?auser=xxxxxx&apswd=xxxxxxxxx&verbose=true|false[&force=true|false]')); ?><code>NetConnection.Admin.CommandFailed</code>

ps domain username and password is correct and all other api works can anyone tell me the problem or point me in right direction