iview refresh after item selection dropdownlist in BSP

Hi,

I've created an iview which calls a R/3 BSP application.

This BSP application contains several dropdown lists.

Everytime an item is selected from any dropdown list, the complete iview refreshes.

The BSP iview isolation method is URL, which is not changeable and one effect should be the 'flickerless' screen, but this does not work.

Any idea what could be the cause/solution?

I've hestitated to create the topic in this forum, perhaps I should create it in the BSP forum : is this a Portal issue, or a BSP / R/3 issue?

Best regards,

Mark