question

The Find Slot activity is designed to find (and assign) a slot for a single item. You can use "Storage.system.querySlots()" in custom code instead to get an array of slots. Note that "hasSpace" will only be guaranteed to be true for the item you used in the query. You also have to assign the slot. To make sure items are only assigned to slots with space, you would have to check the requirement for each item individually (if you want/need to place more than one item per slot)

The code below assigns each item in the "token.Items" array to the first slot with space, for example.

Array Items = token.Items.clone();
Array Slots = Storage.system.querySlots("WHERE slot.hasSpace($1)", 0, Items[1]);
while(Items.length && Slots.length)
{
    if(Slots[1].as(Storage.Slot).hasSpace(Items[1]))
    {
        Storage.Item SI = Storage.Item(Items.shift());
        SI.assignedSlot = Slots[1];
    }
    else
    {
        Slots.shift();
    }
}

BulkSlotAssignment_fm.fsm