reporting services - Report is not loading when using parameters -

i have created ssrs report , uploaded in reportserver working fine. have added 4 parameters same report. works fine in local machine,but not working when uploaded report server. because of permission issues?

it because 1 of reports having more 1000 values. have made following changes in web.config of reports server , working fine.

<add key="aspnet:maxhttpcollectionkeys" value="10000" />