dynamically linking number boxes

Hi all

I'm looking for an elegant solution to dynamically linking number boxes

essentially i am doing a bpm to ms conversion which will then go to tapout

there are various ways i've thought of doing it but they all seem a bit too long winded, so i thought there must be a way of linking the number boxes dynamically

another problem that i may have is linking one number (the ms conversion) to two separate numbers if the user selects two of the same settings (e.g. 2 beats for A and B)

i think this perhaps rules out using pattr and the 'bindto' messages as i don't think you can bind to 2 objects at once (note i've only just started looking at pattr so may be wrong!)

sorry if this isn't too clear but i can't think of a good way of wording it, any help would be great