The following command updates the checkinterval to 60 seconds and the connection timeout to 10 seconds:

curl -k "https://bal:1fourall@20.200.25.100/access/modparams?checkinterval=60&conntimeout=10"

Response: 

<?xml version="1.0" encoding="ISO-8859-1"?>
<Response stat="200" code="ok">
<Success><Data><soa><TTL>10</TTL>
<persist>0</persist>

</soa><check><CheckInterval>60</CheckInterval>

<ConnTimeout>10</ConnTimeout>

<RetryAttempts>2</RetryAttempts>
</check></Data>
</Success>
</Response>