OData Update Action / Mobile Dev. Kit

Hello guys,

can someone explain me, how the Update Action in Sap Mobile Dev. Kit works ?

I want to use my method UpdateEntity (Backend), but i don't know how execute it with OData actions.

I specified my service and my EntitySet but there are things like OData-Readlink and Update-Link required.

Unfortunately i can't define the Update Link.

Thank you for your help.

Greetings,

Timo