Is there any restriction for package function to use with universe objects in IDT?

Hi,

I have a requirement to create universe objects using oracle package function in a universe layer in IDT. I was using following syntax. I found the below syntax is working fine with old version of unverse designer.In IDT it throws error "Invalid Identifier".

In IDT, schema name defined in the syntax  was automatically disappears on saving the recent changes.

Syntax used:

Schema_name.package_name.function_name(parameter1,parameter2).

I have been searching for this but end up in vain

Is there anybody around with a solution for this scenario.

Regards

Jabir