How to attach text comment (memo) to Jetton transfer?

[gtors]

So, how to do that?

[TQK0209]

I haven't even sent the token yet. If you can send it can you help me?

[amirmovafagh]

change this line in create_transfer_body method:
if forward_payload: cell.write_cell(begin_cell().store_uint(0, 32).store_string(forward_payload).end_cell())