BI template calling a BSP to get a value

Hello,
I have a BI web template in Netweaver 2004s. I click on a link_item that calls a function in the script_item to open the BSP. Also in my template I have a holder for an input field:
<label for="description" >
Fiscal period:
<input id="description" value="Enter description" />
</label>
In my BSP layout I have some JavaScript to return a value back to the input field, but cannot seem to get it working.
I have something like:
var pTag1 = window.opener.document.getElementById('description');
pTag1.value = '001.2007';
Are there any ideas?
Thanks,
Linda

Hi,
Thanks for your offer.
To try and explain it simply...in our old 3.5x templates, we had a BW web template which called a BSP page via a JavaSript function. The BSP enabled extended search of various characteristics. The BSP then passed the value selected, back to a JavaScript form in the template using the following as an example:
window.opener.form.field.value = newvalue.
This could be done for numerous variables. We also had a button which would then re-run the report with the new variable values - this was done using:
SAP_BW_URL_Get() + "CMD=PROCESS_VARIABLES&SUBCMD=VAR_SUBMIT"... etc
In the new template, I can call the BSP, I can access an input field using document.getElementById, but I can't access the window.opener (ie, the template) from the BSP.
Then I have the challenge of finding the equivalent "CMD=PROCESS_VARIABLES&SUBCMD=VAR_SUBMIT".
Any help would be appreciated.
Regards,
Linda

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