Robert/Jon,
I realised, after doing some fiddling following your replies, that it was in fact the list property that I was interested in. I was able to do what I wanted by accessing the 4th column in the list array.
I was listing donations received with a view to allowing users to move donations from one record to another. I was including the record number (the 4th column), which I then used to GOto in the donations received table and change the ID field.
Thanks for your help and for advancing my knowledge.
Stewart