[Spce-user] API: how to get force_inbound_calls_to_peer subscribers

[Ml Ml]

Hello,
how can i get all subscribers which have

force_inbound_calls_to_peer=force?

I tried:HTTP::Request->new('GET',
"$sipwise_uri/api/subscriberpreferences/?force_inbound_calls_to_peer=force");

But it does not return the expected results. Should my GET URL be different?

However, this search example seems to work:
 HTTP::Request->new('GET', "$sipwise_uri/api/customers/?external_id=$no");

Any idea what I am doing wrong?

Thanks,
Michael