default values for action parameters from function in the behavior of RAP in Odata v4

[amo_ry]

I made an action with parameters 

and i want to put default values in this parameter , so i created a function GetDefaultsForGET_SERIAL

i am trying to default it in the action like this : 

but it is not supported in my release . 

so i am trying to add it in the annotation file : 

it works with ODATA V2 with these annotations : 

but i am trying in ODATA V4 but not working: 

can any one help ? 

[amo_ry]

no one can help

[AnmolBhatHD]

Hi @amo_ry ,

I also ended up with same situation, did you get any result for this problem?

May be @Andre_Fischer  could help.

Andre - Do you know if there is another annotation for Odata V4 for setting up default values.

We do not have option to use default function as this is only available on Public Cloud.

Regards,

Anmol

[saurabh__khare]

Did you find a solution for this? Why can't SAP provide an easier way of down porting these new features to lower releases? 😐