sig Customer {
    orders: seq RecordedOrder,
}

sig RecordedOrder {}

fact "example fact" {
    RecordedOrder.~orders > 0;
}

How can I revers the orders relation, the normal ~ operator doesn’t work and I get this error

~ can be used only with a binary relation.Instead, its possible type(s) are:{this/Customer->seq/Int->this/RecordedOrder}

Is there a way to achieve this ?

I expect to reverse the relation