How to whitelist WebIDE in SFSF

Hi there,

i am trying to whitlist the webide in SF but it is not working. In the SP Assertion Consumer Settings i have the entry:

https://webide-accountName.dispatcher.hana.ondemand.com/?hc_reset

But when i try to open the WebIde i get an 403. What is the needed Entry here?

Regards

Mathias