Dissector / Create subtree of non-consecutive fields

Hi all,

I'm writing a dissector (over UDP) which has header fields (32 bytes) but also footer fields (padding of 8 bytes). The remaining data (between my protocol header and protocol footer) are passed to the usual "data" dissector.

When creating my dissector subtree I do not success to highlight just the header and the footer.

With the following code I highlight the full UDP payload (my protocol header + the data + my protocol footer): amin_item = proto_tree_add_item(tree, proto_amin, tvb, 0, -1, FALSE); amin_tree = proto_item_add_subtree(amin_item, ett_amin);

Besides, with the following code I only highlight my protocol header: amin_item = proto_tree_add_item(tree, proto_amin, tvb, 0, 32, FALSE); amin_tree = proto_item_add_subtree(amin_item, ett_amin);

How could I create my subtree and only highlight my protocol header + my protocol footer?

Thanks.

PS: In the Ethernet frame with padding, when clicking to the Ethernet subtree, Ethernet header fields and padding are highlighted (the data between is not highlighted). I would like to do the same.