Passing paramters between bsp applications

Hi All,

I have developed search help for WBS in which i am displaying all WBS elements according to the search critiria choosen by user, but when i am selecting a particular WBS element to pass it to parent window it shows "access is denied" error!, here is my code where i am passing values to parent window to set a field from child window( both windows are from different bsp applications ).

<script>

eval('opener.document.forms["erForm"].''<%= project_code %>''.value ="'+ '<%= project_id%>' + '"');

self.close();

</script>

Please advice me in a such way that to solve this problem.

Thank you for your help

Yoki