In this case the question is: how to pass such a paramter by http ?
The answer is quite simple. In your query you must have a sequence like:
&CRITS=CRIT1&CRITS=CRIT2The number of &CRITS= depends on the number of values.
&CRITS=CRIT1&CRITS=CRIT2The number of &CRITS= depends on the number of values.