Suite Script works in the UI but not on the WebStore

Suite Script works in the UI but not on the WebStore

We have the following script working in out UI and it works just fine:

function setwarehousedeptPageInit(onload)
{
nlapiSetFieldValue('department', 3);
}

We have tried to put this out to the WebStore so that when ever an order is placed a department is automatically set.  When we view orders that come in from the webstore the department is blank.  If we open it in edit mode department populates as it is designed.  Can some please give me some guidance on how to get this to work?

Thanks.

-Andrew