General Actions:
If you want to show / do not show a plan from campaign in case the site contains parameter you define, you have to pass this parameter to the URL code of AdServer.
For example: your site is divided into categories. These categories can be forwarded to URL code of AdServer and ad can be displayed / not displayed in required section.
Paste the script at the top of the site:
<script type="text/javascript">
var bburlparam = "whoIsIt=jape&price=100";
</script>
Insert chosen parameters and values into the part bburlparam. AdServer takes variable from inserted script to called code of ad possition.