NAV2017 - Web Service - Sub Page - Filter RecordID

Hello everyone,

I have a card-page which contains among others a sub-page. I need to filter this sub-page via a RecordID filter being able to filter by code as a record ID can't be linked via a SubPageLink Property.

The code in the card page is as followed:

In the OnAfterGetCurrRecord Trigger:

CurrPage.BMGTicketingTranslationList.PAGE.SetRecLinkFilter(Rec.RECORDID);

Here is the filter in the sub page:

SetRecLinkFilter(RecId : RecordID)
SETRANGE("Record ID", RecId);
CurrPage.UPDATE(FALSE);

All this works properly in the RTC client. But I need to publish the page as Web Service and unfortunately under these conditions the RecordID filter doesn't work.
As a result I receive all data-sets in the sub-page hence the filter has been ignored.
If I debug the Web-Service, the code is run correctly, but then the result is wrong.
Does anybody can give me an advise about what to do? Actually this should work with Web Services, shouldn't it?
I'd appreciate your help.