UI5 Navigation to script view with parameters

Hello,

I have a xsodata service to access a database table and I need a navigation from this table to a script calculation view which has 2 input parameters.

Problem is these parameters are not part of the database table. They come from an UI5 application and are entered by the user. So I can't use method described in part "7.1.6.8 OData Parameter Entity Sets" of hana dev guide.

Here is my script calc view

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Clik here to view.

Here is my xsodata code :

"<package>.data::LOCATIONS" as "LocationsTable"

     navigates ( "location_devices" as "Devices");

"<package>.models::CV_LOC_DEVICES" as "LocDevices"

    keys generate local "ID"

    aggregates always

    parameters via entity;

association "location_devices"

        principal "LocationsTable"("LOC_GROUPID") multiplicity "1"

        dependent "LocDevices"("LOC_GROUPID") multiplicity "*";

For now I call the calc view from my UI5 app with this kind of link :

.../services/services.xsodata/LocDevicesParameters(IP_FR_DTE=param1,IP_TO_DTE=param2)/Results&$filter=LOC_GROUPID eq 1

But I would like to get LOC_GROUPID from current context in my UI5 app, so the link should be something like :

.../services/services.xsodata/LocationsTable(1)/Devices(IP_FR_DTE=param1,IP_TO_DTE=param2)

Could you please explain me how I can get this.

Thanks,

François